That “Ooh! Ooh ooh!” That Horshack laugh. When Ron Palillo died Tuesday morning at his home in Palm Beach Gardens, Fla., another little nugget of ‘70s pop culture died with him. Palillo ...

Actor Ron Palillo, best known as the adorably irritating Arnold Horshack from the 1970s sitcom “Welcome Back Kotter,” died this morning in Florida. The 63-year-old Connecticut native collapsed ...