You youngsters won't remember, but Robert Hegyes was a character in "Welcome Back Kotter with John Travolta in the 70s. He played Epstein along side the other Sweathogs - Vinnie Barbarino (Travolta), Freddie "Boom Boom" Washington, and Arnold Horshaaack.
Classic sitcom. I couldn't find much in the way of video clips, but if you ever get a chance watch some of those old episodes. It'll make you laugh.