Movie/TV Sound Bytes for Multimedia
http://www.moviewavs.com
http://movie-sounds.org/
http://www.gotwavs.com/Movies.html
http://www.moviesoundscentral.com
http://www.wavcentral.com
http://www.moviesoundclips.net
http://www.rpmswavs.com
Good one, but blocked at school:
http://www.soundboard.com/category.aspx