It's a Wonderful Tiny Toons Christmas Special (1992)

Buster Bunny is trying to produce and direct the Tiny Toons Holiday Special, but it is not working. Montana max, makes him look bad, and then bribes the network executives into firing Buster and making him the producer. Buster thinks he has had it, and plans to throw himself out of cartoons forever. His guardian angel appears and shows him what Tiny Toons would be like without him.