Sound Files

April Winchell: Multimedia
Voice actor April Winchell offers a collection of phone pranks, parodies, celebrity covers, bloopers, outtakes and sundry audio and video clips featuring: Leonard Nimoy, Brent Spiner, Patrick Stewart, Robin Williams, William Shatner, Ray Stevens, Brad Garrett, Vincent Price, and April Winchell (of course).
http://www.aprilwinchell.com/multimedia/

Cartoon Wavs
Featuring over 2000 cartoon sounds - clips from the casts of Animaniacs, The Powerpuff Girls, Dexter's Laboratory, Johnny Bravo, Transformers, Looney Tunes, Scooby-Doo, Pokémon, and South Park.
http://www.cartoonwavs.com/

Clay's Sound Emporium
A collection of WAV files from various movies and TV series, including a large section for The Simpsons. Also has clips from Hal Smith, Seth McFarlane, Mike Judge, Mel Blanc, and Joe Alaskey.
http://www.clayloomis.com/