Fans of comedy must thank Tracey Ullman for introducing us to The Simpsons . . . oh, and she's pretty funny herself. This Briton washed onto these shores in the '80s with her eponymous comedy show on Fox, followed by her HBO series Tracey Takes On. Name any type of person, and it's very likely she's played it, even the type of person who would show their bum. We can't say she's shown us Plenty (1985), but she's not a complete skinflint either. Tracey takes on mooning, proving she's ready to bare in Robert Altman's fashion farce Ready to Wear (1994). Never let it be said that any actress on our roster has been left behind.