The Flintstones/The Simpsons

Cast

 * Fred as Homer
 * Wilma as Marge
 * Bam Bam as Bart
 * Pebbles as Lisa
 * Dino as Santa's Little Helper
 * Grand Pumba as Ned Flanders
 * Daphne (from Scooby Doo) as Maude Flanders
 * Joe Rockhead as Moe
 * Barney as Barney (Both share the same name)
 * Cliff as Mr. Burns
 * Mr. Slate as Mayor Quimby
 * Arnold the Paper Boy as Milhouse
 * Xavier the Villian as Snake Jailbird
 * Pearl Slaghoople as Agnes Skinner