I say with pride that I've done over a hundred voices or something, and some of them may have only had two or three lines, but I literally never ran out. I think I'm a bit of a savant that way. I kind of remember every voice I hear, famous or otherwise, and can imitate it pretty fast. I've enjoyed mimicking people famous and not famous all through my life, and they kind of remain in the memory banks, so I'm ready to trot them out.