The cast of Welcome Back, Kotter was unforgettable, each member bringing something unique to the table in this classic sitcom ...

While only lasting four seasons from 1975-79, ABC’s sitcom Welcome Back, Kotter was one of TV’s biggest hits of the decade.

Gabe Kotter is a high-school teacher with a bunch of unruly students in his class. The student troublemakers are led by Vinnie Barbarino, who has a knack for rhyming insults.