Actor Ron Palillo has passed away suddenly at the age of 63. He died at his Florida home early this morning, according to his friend Stacy Sacco. Jacqueline Stander, an agent for Palillo, told NBC that the actor had a heart attack and passed away in his sleep.
He was best known for playing “Sweathog” Arnold Dingfelder Horshak on the hit TV series Welcome Back, Kotter. The show aired from 1975-79 on ABC and featured a young John Travolta as well as Gabe Kaplan, Marcia Strassman, John Sylvester White, Robert Hegyes, Lawrence-Hilton Jacobs, Melonie Haller, and Stephen Shortridge.