Welcome Back, Kotter is an American television sitcom starring Gabe Kaplan and featuring a young John Travolta. Videotaped in front of a live studio audience, it originally aired on the ABC network from September to June 1979
Ron Palillo He played Arnold Dingfelder Horshack on the comedy "Welcome Back, Kotter."/ I met Ron Palillo at a pop culture convention, and he autographed a children's book he had illustrated. I was sorry to hear he passed away.
The Sweat Hogs from Welcome Back, Kotter (clockwise from the top): John Travolta as Vinnie Barbarino, Robert Hegyes as Juan Epstein, Ron Palillo as Arnold Horshack, and Lawrence Hilton-Jacobs as Freddie "Boom Boom" Washington