http://keepvid.com/
You can download from:
Angry Alien, ArtistDirect, Blastro, Blennus, Blip.tv, Bofunk, Bolt, Break.com, Castpost, Dailymotion, DevilDucky, FindVideos, Free Video Blog, Google Video, Grinvi, Grouper, iFilm, LuluTV, Metacafe, Midis.biz, Music.com, MusicVideoCodes.info, MySpace Video Code, PcPlanets, Pixparty, Putfile, REVVER, Sharkle, StreetFire, That Video Site, The One Network, VideoCodes4U, VideoCodesWorld, VideoCodeZone, vidiLife, VIDNET.com, Vimeo, Web62.com, YouTube and ZippyVideos.