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Associated Press
FILE - This June 8, 2008 file photo shows actor Ron Palillo at the TV Land Awards in Santa Monica, Calif. Palillo, best known as the nerdy high schooler Arnold Horshack on "Welcome Back, Kotter," died Tuesday, Aug. 14, 2012, in Palm Beach Gardens, Fla., of an apparent heart attack. He was 63.  (AP Photo/Mark Mainz, file)

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