He moved quickly from playing "Vinnie Barbarino" on Welcome Back, Kotter to movie fame in Saturday Night Fever and Grease. He has two Best Actor Oscar nominations, for Saturday Night Fever and Pulp Fiction. Now known as a Scientologist and a pilot, he launched a recording career with "Let Her In" during his Kotter days. His Grease soundtrack duets with Olivia Newton-John, "Summer Nights" and "You're the One That I Want," did even better.

Today, John Travolta turns 60!