Perhaps you are thinking of:
* "Toontown" which is a Disney theme park, a video game series, and a series of books.
* "A Goofy Movie" which was released in 1995 and featured a young boy who gets into trouble in a fictional town called Toontown.
* "Who Framed Roger Rabbit" which was released in 1988 and featured a cartoon world populated by Toons.
If you can provide more information about the show you are looking for, I may be able to help you find the cast list.