For all you ubuntu freaks, heres a huge repository list that I found.

# Treviño’s Ubuntu Feisty Fawn Sources list
# http://3v1n0.tuxfamily.org/blog/?page_id=13
#
# Repository List based on standard feisty with many extra packages
#
# If you get errors about missing keys, lookup the key in this file
# and run these commands (replace KEY with the key number):
#
#  gpg –keyserver subkeys.pgp.net –recv KEY
#  gpg –export –armor KEY | sudo apt-key add -
#
# If you have a gpg key URL use (replace URL with the key address):
#
#  wget URL –quiet -O – | sudo apt-key add -
#
# If you have a gpg key file use (replace FILE with the key file):
#
#  sudo apt-key add FILE
#
# In the repository list page there’s also a script that can do this
# work automatically, this is suggested only if you know what you’re doing # Ubuntu supported packages (GPG key: 437D05B5)
deb http://archive.ubuntu.com/ubuntu feisty main restricted
deb http://archive.ubuntu.com/ubuntu feisty-updates main restricted
deb http://archive.ubuntu.com/ubuntu feisty-security main restricted
deb http://archive.ubuntu.com/ubuntu feisty-proposed main restricted
deb-src http://archive.ubuntu.com/ubuntu feisty main restricted
deb-src http://archive.ubuntu.com/ubuntu feisty-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu feisty-security main restricted
deb-src http://archive.ubuntu.com/ubuntu feisty-proposed main restricted

# Ubuntu community supported packages (GPG key: 437D05B5)
deb http://archive.ubuntu.com/ubuntu feisty universe multiverse
deb http://archive.ubuntu.com/ubuntu feisty-updates universe multiverse
deb http://archive.ubuntu.com/ubuntu feisty-security universe multiverse
deb http://archive.ubuntu.com/ubuntu feisty-proposed universe multiverse
deb-src http://archive.ubuntu.com/ubuntu feisty universe multiverse
deb-src http://archive.ubuntu.com/ubuntu feisty-updates universe multiverse
deb-src http://archive.ubuntu.com/ubuntu feisty-security universe multiverse
deb-src http://archive.ubuntu.com/ubuntu feisty-proposed universe multiverse

# Ubuntu backports project (GPG key: 437D05B5)
deb http://mi.mirror.garr.it/ubuntu feisty-backports main restricted universe multiverse
deb-src http://mi.mirror.garr.it/ubuntu feisty-backports main restricted universe multiverse

# CANONICAL COMMERCIAL REPOSITORY (Hosted on Canonical servers, not Ubuntu servers.
# RealPlayer10, Opera, VmWare Server and more to come.)
deb http://archive.canonical.com/ubuntu feisty-commercial main

# UbuntuStudio Repository (GPG key: B6A4EB33)
deb http://archive.ubuntustudio.org/ubuntustudio feisty main
deb-src http://archive.ubuntustudio.org/ubuntustudio feisty main

## kubuntu.org packages for the latest KDE version (GPG key: DD4D5088)
#deb http://kubuntu.org/packages/kde-latest feisty main
#deb-src http://kubuntu.org/packages/kde-latest feisty main

## kubuntu.org packages for the latest Koffice version (GPG key: DD4D5088)
#deb http://kubuntu.org/packages/koffice-latest feisty main
#deb-src http://kubuntu.org/packages/koffice-latest feisty main

## kubuntu.org packages for the latest amaroK version (GPG key: DD4D5088)
#deb http://kubuntu.org/packages/amarok-latest feisty main
#deb-src http://kubuntu.org/packages/amarok-latest feisty main

# kubuntu.org packages for KDE4 alpha-1 (GPG key: DD4D5088)
deb http://kubuntu.org/packages/kde4-3.90.1 feisty main
deb-src http://kubuntu.org/packages/kde4-3.90.1 feisty main

# Bleeding edge wine packages
deb http://wine.budgetdedicated.com/apt feisty main
deb-src http://wine.budgetdedicated.com/apt feisty main

# Seveas’ packages (GPG key: 1135D466)
# GPG key-file: http://mirror.ubuntulinux.nl/1135D466.gpg
deb http://mirror.ubuntulinux.nl feisty-seveas all
deb-src http://mirror.ubuntulinux.nl feisty-seveas all

# The Opera browser (packages) (GPG key: 6A423791)
deb http://deb.opera.com/opera etch non-free

## Google picasa packages (GPG key: 7FAC5991 – missing)
#deb http://dl.google.com/linux/deb/ stable non-free

# Medibuntu (Multimedia, Entertainment & Distraction In Ubuntu – ex Penguin Liberation Front)
# GPG key-file: http://medibuntu.sos-sts.com/repo/medibuntu-key.gpg
deb http://medibuntu.sos-sts.com/repo/ feisty free non-free
deb-src http://medibuntu.sos-sts.com/repo/ feisty free non-free

# The repository from Kubuntu Germany
# GPG key-file: http://archive.czessi.net/ubuntu/kczessi.gpg
deb http://archive.czessi.net/ubuntu feisty main restricted universe multiverse preview
deb-src http://archive.czessi.net/ubuntu feisty main restricted universe multiverse preview

# Achim’s Unofficial ‘feisty’ Kubuntu packages
# GPG key-file: http://www.mpe.mpg.de/~ach/ach-gpg.asc
deb http://www.mpe.mpg.de/~ach/kubuntu/feisty ./
deb-src http://www.mpe.mpg.de/~ach/kubuntu/feisty ./

# Ubuntu feisty University Klagenfurt packages
# GPG key-file: http://ubuntu.uni-klu.ac.at/uniklu-debuild.pub
# $ sudo apt-key add uniklu-debuild.pub
#   uniklu:         backports and new packages
#   uniklu-intern:  not freely redistributable (jvm), or modified packages
#   uniklu-testing: packages not ready for general use
deb     http://ubuntu.uni-klu.ac.at/ubuntu.uniklu/  feisty  uniklu
deb     http://ubuntu.uni-klu.ac.at/ubuntu.uniklu/  feisty  uniklu-intern
deb     http://ubuntu.uni-klu.ac.at/ubuntu.uniklu/  feisty  uniklu-testing
deb-src http://ubuntu.uni-klu.ac.at/ubuntu.uniklu/  feisty  uniklu
deb-src http://ubuntu.uni-klu.ac.at/ubuntu.uniklu/  feisty  uniklu-intern
deb-src http://ubuntu.uni-klu.ac.at/ubuntu.uniklu/  feisty  uniklu-testing

# MEPIS improvements, overrides and updates (distro based on kubuntu)
#deb http://apt.mepis.org/mepis32-6.5/ mepis main
#deb http://apt.mepis.org/simply32-6.0/ mepis main

# Ekiga and Debian pkg-voip
deb http://pkg-voip.buildserver.net/ubuntu feisty main

# MythTV Repository for Ubuntu Linux (GPG key: 80DF6D58)
deb http://home.eng.iastate.edu/~superm1 feisty all
deb-src http://home.eng.iastate.edu/~superm1 feisty all

# Official Beryl Ubuntu Packages (GPG key: 1609B551)
# GPG key-file: http://ubuntu.beryl-project.org/root@lupine.me.uk.gpg
deb http://ubuntu.beryl-project.org feisty main
deb-src http://ubuntu.beryl-project.org feisty main

# Ubuntu repository for Screenlets (GPG key: F854AFD7)
# GPG key-file: http://hendrik.kaju.pri.ee/ubuntu/F854AFD7.gpg
deb http://hendrik.kaju.pri.ee/ubuntu feisty screenlets
deb-src http://hendrik.kaju.pri.ee/ubuntu feisty screenlets

# Subpixel Font rendering packages (GPG key: 937215FF)
# Improved fonts on LCDs – WARNING: May violate some patents
# GPG key-file: http://www.telemail.fi/mlind/ubuntu/937215FF.gpg
deb http://www.telemail.fi/mlind/ubuntu feisty fonts main
deb-src http://www.telemail.fi/mlind/ubuntu feisty fonts main

## Others mlind experimental misc Packages (GPG key: 937215FF)
## GPG key-file: http://www.telemail.fi/mlind/ubuntu/937215FF.gpg
#deb http://www.telemail.fi/mlind/ubuntu feisty experimental
#deb-src http://www.telemail.fi/mlind/ubuntu feisty experimental

# Skype packages
deb http://download.skype.com/linux/repos/debian/ stable non-free

# Geole’s Ubuntu Repository
# GPG key-file: http://www.geole.info/fileadmin/data/misc/geole.info-apt-key.gpg
deb http://ubuntu.geole.info/ feisty universe multiverse
deb-src http://ubuntu.geole.info/ feisty universe multiverse
deb http://ubuntu.geole.info/ feisty-backports main universe multiverse restricted
deb-src http://ubuntu.geole.info/ feisty-backports main universe multiverse restricted

# Linux2Go Ubuntu Packages (GPG key: E8BDA4E3)
deb http://www.linux2go.dk/ubuntu feisty main
deb-src http://www.linux2go.dk/ubuntu feisty main

# Asher256’s Repository
deb http://asher256-repository.tuxfamily.org edgy main dupdate french
deb http://asher256-repository.tuxfamily.org ubuntu main dupdate french

# Tvfreeplayer Packages (GPG key: )
# GPG key-file: http://www.tvfreeplayer.com/linux/falcon/tvfreeplayer.gpg
deb http://www.tvfreeplayer.com/linux/falcon feisty all
deb-src http://www.tvfreeplayer.com/linux/falcon feisty all

# gnomemeeting – ekiga (GPG key: 52ABFCB1)
deb http://snapshots.ekiga.net/ubuntu/ feisty main
deb-src http://snapshots.ekiga.net/ubuntu/ feisty main

## lprod packages: many audio/video apps: avidemux, cinelerra…
#deb http://lprod.org/deb/feisty/ ./
#deb-src http://lprod.org/deb/feisty/ ./

# Cinelerra Feisty packages
deb http://www.kiberpipa.org/~gandalf/ubuntu/feisty/cinelerra/i686/ ./

## Spring Packages (RTS game)
#deb ftp://ftp.gwdg.de/pub/linux/people/fbo/debspring/dapper/ /
#deb-src ftp://ftp.gwdg.de/pub/linux/people/fbo/debspring/dapper/ /

# Cafuego’s feisty Stuff: Broadcom firmware, google-earth, secondlife (GPG key: 969F3F57)…
deb http://au.ubuntu.cafuego.net feisty-cafuego all
deb-src http://au.ubuntu.cafuego.net feisty-cafuego all

# Debuntu Ubuntu feisty packages
# GPG Key: http://repository.debuntu.org/GPG-Key-chantra.txt
deb http://repository.debuntu.org/ feisty multiverse
deb-src http://repository.debuntu.org/ feisty multiverse

## BMPx feisty Repository
## GPG key-file: http://files.beep-media-player.org/packages/bmp-packages.pubkey
#deb http://files.beep-media-player.org/packages/ubuntu feisty main testing
#deb-src http://files.beep-media-player.org/packages/ubuntu feisty main testing

# Morgoth Repository (GPG key: 7E2E4741)
# Provides Monkey’s Audio, xmms pugins, vlc plugins, gqview, audacius, audacity…
# GPG key-file: http://morgoth.free.fr/files/morgoth-signkey.gpg.asc
deb http://morgoth.free.fr/ubuntu feisty-backports main
deb-src http://morgoth.free.fr/ubuntu feisty-backports main

## ATi & nVidia drivers Ubuntu packages
## GPG key: http://albertomilone.com/drivers/tseliot.asc
#deb http://www.albertomilone.com/drivers/feisty/latest/32bit binary/

# Automatix repository (GPG key: E23C5FC3)
deb http://www.getautomatix.com/apt feisty main

# edevelop – e17 (Enlightenment DR 17)
# GPG key: http://lut1n.ifrance.com/repo_key.asc
deb http://edevelop.org/pkg-e/ubuntu feisty e17
deb-src http://edevelop.org/pkg-e/ubuntu feisty e17
#deb http://e17.dunnewind.net/ubuntu feisty e17
#deb-src http://e17.dunnewind.net/ubuntu feisty e17

# Musicbrainz Repository
# GPG key-file: http://ftp.musicbrainz.org/pub/musicbrainz/users/luks/public.key
deb http://ftp.musicbrainz.org/pub/musicbrainz/users/luks/ubuntu feisty musicbrainz
deb-src http://ftp.musicbrainz.org/pub/musicbrainz/users/luks/ubuntu feisty musicbrainz

## Imbrandons software repository (GPG key: 887D9FD2)
## GPG key-file: http://www.imbrandon.com/packages/887D9FD2.gpg
#deb http://www.imbrandon.com/packages feisty all
#deb-src http://www.imbrandon.com/packages feisty all

## Candyz’s Ubuntu Packages
## GPG key-file: http://cle.linux.org.tw/candyz/Ubuntu/candyz.key
#deb http://cle.linux.org.tw/candyz/Ubuntu/feisty i386/

# The Ubuntu NLP Repository (GPG key: 8ABD1965)
# GPG key-file: http://cl.naist.jp/~eric-n/ubuntu-nlp/8ABD1965.gpg
deb http://cl.naist.jp/~eric-n/ubuntu-nlp feisty all
deb-src http://cl.naist.jp/~eric-n/ubuntu-nlp feisty all

# Ubuntu System Administrator packages (GPG key: 2F306651)
# GPG key-file: http://ubuntu.moshen.de/2F306651.gpg
deb http://ubuntu.moshen.de feisty multimedia misc
deb-src http://ubuntu.moshen.de feisty multimedia misc

## Michael Biebl Tracker Repository (GPG key: BD058554)
## GPG Key-file: http://www.teco.edu/~biebl/biebl.asc
#deb http://debs.michaelbiebl.de/ feisty main
#deb-src http://debs.michaelbiebl.de/ feisty main

# The Consciousness Repository (GPG key: DD385D79)
# GPG key-file: http://debs.peadrop.com/DD385D79.gpg
deb http://debs.peadrop.com feisty all
deb-src http://debs.peadrop.com feisty all

## Tolero Ubuntu Repository
#deb http://ubuntu.tolero.org/ feisty main
#deb-src http://ubuntu.tolero.org/ feisty main

# IVTV Repository for Ubuntu Linux (GPG key: 80DF6D58)
# GPG key-file: http://dl.ivtvdriver.org/ubuntu/80DF6D58.gpg
deb http://dl.ivtvdriver.org/ubuntu feisty all
deb-src http://dl.ivtvdriver.org/ubuntu feisty all

# syzygy42 repository: avant-window-navigator, exaile, closure… (GPG key: 8434D43A)
# GPG key-file: http://download.tuxfamily.org/syzygy42/8434D43A.gpg
deb http://download.tuxfamily.org/syzygy42/ feisty all
deb-src http://download.tuxfamily.org/syzygy42/ feisty all

## Firefox 3.0 alpha builds for feisty (unstable)
#deb http://gnomefreak.youmortals.com/mozilla-testing feisty main
#deb-src http://gnomefreak.youmortals.com/mozilla-testing feisty main

## Swiftfox (enhanced Firefox for linux) packages
deb http://getswiftfox.com/builds/debian unstable non-free

# Sonnes repository (aMule AdunanZa, Audacious)
deb http://adurepo.altervista.org/ubuntu feisty all
deb-src http://adurepo.altervista.org/ubuntu feisty all

# darkmagez repository: rhythmbox and newer gtk (GPG key: A3012FB3)
# GPG key-file: http://mirror.randumb.org/darkmagez/repo/A3012FB3.gpg
deb http://mirror.randumb.org/darkmagez/repo feisty-darkmagez multimedia-experimental #core-experimental
deb-src http://mirror.randumb.org/darkmagez/repo feisty-darkmagez multimedia-experimental #core-experimental

## Raof Repository: newer versions of Compiz, beagle, mono, scribus… (GPG key: 2F306651)
## GPG key-file: http://raof.dyndns.org/falcon/2F306651.gpg
#deb http://raof.dyndns.org/falcon feisty all
#deb-src http://raof.dyndns.org/falcon feisty all

# FoLKeN ‘Repozytorium’ (GPG key: 6FB65A0F)
deb http://deb.svx.pl/ feisty main universe bleeding
deb-src http://deb.svx.pl/ feisty main universe bleeding

# Le dépomaniak repository (GPG key: 1D59E694)
# GPG key-file: http://ubuntu.davromaniak.eu/1D59E694.gpg
deb http://ubuntu.davromaniak.eu feisty-depomaniak all
deb-src http://ubuntu.davromaniak.eu feisty-depomaniak all

# Mez’s Repository (GPG key: 6AAAA569)
# GPG key-file: http://apt.sourceguru.net/6AAAA569.gpg
deb http://apt.sourceguru.net feisty all
deb-src http://apt.sourceguru.net feisty all

# Ryan Kavanagh’s packages (GPG key: 02544D0E)
# GPG key-file: http://packages.ryanak.ca/02544D0E.gpg
deb http://packages.ryanak.ca ryan-feisty all
deb-src http://packages.ryanak.ca ryan-feisty all

# OpenedHand Debian/Ubuntu Packages
deb http://debian.o-hand.com feisty/
deb-src http://debian.o-hand.com feisty/

# OpenSync svn ubuntu repository (GPG key: B029CB84)
deb http://www.in.fh-merseburg.de/~jahn/opensync-0.21/ feisty main
deb-src http://www.in.fh-merseburg.de/~jahn/opensync-0.21/ feisty main
# deb http://www.in.fh-merseburg.de/~jahn/opensync-svn/ feisty main
# deb-src http://www.in.fh-merseburg.de/~jahn/opensync-svn/ feisty main

# Iuculano’s debian packages (GPG key: AE3BE9AA)
# GPG key-file: http://ubuntu.iuculano.it/AE3BE9AA.gpg
deb http://ubuntu.iuculano.it feisty amsn thunderbird #ck-kernel #all
deb-src http://ubuntu.iuculano.it feisty amsn thunderbird #ck-kernel #all

# Elisa Debian Packages
deb http://elisa.fluendo.com/packages feisty main

# PollyCooke, il repository
deb http://download.tuxfamily.org/pollyrepo feisty/

# Treviño’s Ubuntu Feisty Fawn Repository (GPG key: 81836EBF – DD800CD9)
# Many “random” bleeding edge software: aMule, aMSN, Mercury, flash…
# Further informations and complete packages list: http://3v1n0.tuxfamily.org
deb http://download.tuxfamily.org/3v1deb feisty 3v1n0
deb-src http://download.tuxfamily.org/3v1deb feisty 3v1n0

# Treviño’s Ubuntu feisty EyeCandy Repository (GPG key: 81836EBF – DD800CD9)
# Many eyecandy 3D apps like Beryl, compiz and kiba-dock snapshots
# built using latest available (working) sources from git/svn/cvs…
deb http://download.tuxfamily.org/3v1deb feisty eyecandy
deb-src http://download.tuxfamily.org/3v1deb feisty eyecandy

## Treviño’s Ubuntu Suspend2 patched kernels Repository (GPG key: 81836EBF – DD800CD9)
## Ubuntu kernels patched with Suspend2 plus other related tools www.suspend2.net
## Warning: they will replace standard ubuntu kernel related packages
#deb http://download.tuxfamily.org/3v1deb feisty suspend2
#deb-src http://download.tuxfamily.org/3v1deb feisty suspend2