Welcome Back, Kotter Cast: Where Are They Now?

Robert Hegyes, who played Juan Epstein on "Welcome Back Kotter," has died. "Good Morning America" recently reunited the cast of the 1970s hit show that brought catchphrases to classrooms coast-to-coast and catapulted the sweathogs, remedial students in Mr. Kotter's high school class, into millions of young hearts. (Heidi Gutman/ABC )