The Simpsons/The Wild World of Entertainment

The cast:
 * Family Guy Characters as The Simpsons
 * Lenny, Helen and Bart as Fry, Leela and Bender of Futurama
 * Homer as Johnny Bravo
 * Martin as Dexter
 * Janey, Sherri and Terri as the Powerpuff Girls
 * Nelson as SpongeBob
 * Little Children at Day Care as the Rugrats
 * Principal Skinner as Garfield
 * Groundskeeper Willie and Carl Carlson as The Angry Beavers
 * Snowball 2 and Santa's Little Helper as CatDog
 * Jimbo, Dolph and Kearney as Alvin & the Chipmunks
 * Transformers as Theirselves
 * Stan, Cartman, Kyle and Kenny as Theirselves
 * Milhouse as Jacob
 * Yin and Yang as Theirselves
 * Moe as Eek Stravaganza
 * Martin as Arnold