Adam Sandler met a waitress on the set of Big Daddy in 1999, married her, and has put her in more than 20 movies since. That running family joke is also the engine behind the biggest paycheck in Hollywood. Last year Sandler out-earned every actor alive. $48 million, per Forbes. Tom Cruise came second at $46 million after strapping himself to aircraft for Mission: Impossible. Sandler topped the list without releasing a single box office hit. The cameos are a window into how. Happy Madison has…