His list of incredible Simpsons characters shows just how much range ... but Hank Azaria's voice immediately made more of a clown and the show is better for it, Poor Kirk Van Houten.

No one on planet Earth has ever turned an act of petty annoyance into a multi-million dollar empire quite like The Simpsons ...

Castellaneta is responsible for several other key Simpsons characters. It's Castellaneta behind Krusty the Clown, Groundskeeper Willie, and Mayor Quimby, among many others. He's now also the voice for ...