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

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.

The show starred Kaplan as teacher Gabe Kotter, guiding a group of troublemaking high school students known as the "Sweathogs ...