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Jack Nicholson — Los Angeles Lakers
Arguably the greatest Lakers fan ever, Jack has had courtside seats for more than three decades and rarely misses a game. His trash-talk and scolding of refs and opposing coaches are legendary, and directors reportedly accommodate his shooting schedule around home games. "He's a real fan," former Lakers coach Pat Riley has said. "He's not one of these actors that all of a sudden get front row seats and then they're gone. He's for real. He cares."