Best Known For: Diner (1982), Police Academy (1984), Three Men and a Baby (1987)
Most Recent Project: I Heart Shakey (2012)

How did Steve Guttenberg become a movie star? True, it was the '80s, but the question nags. In the classic episode of The Simpsons entitled "Homer the Great," it's posited thata secret organization is responsible for keeping Guttenberg active.

Now, the jokes have changed. An unforgettable episode of Party Down found Guttenberg playing himself: a rich thing to be gawked at, like an antique.