August 14, 2012 5:00 AM

Ron Palillo, who played Horshack on ‘Welcome Back, Kotter,’ dies at 63

— Ron Palillo, best known as mouthy classroom goofball Arnold Horshack on the 1970s TV series “Welcome Back, Kotter,” died at his Palm Beach Gardens home early Tuesday morning, according to Stacy Sacco, Palillo’s friend.

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