5. Christopher Walken, Assistant Lion Tamer
The most parodied celebrity on the amateur comedy circuit, Christopher Walken, got his first taste of show business as an assistant lion tamer. Walken got the gig after lion tamer Carol Jacobs decided that young Christopher should play his on-stage son.
As you might expect, the uniquely-inflected actor is rather modest about his time spent taming. He said that Sheba, his lion, was old and docile, "really more like a dog."