Seems that whenever Hollywood has a crime to solve, it calls on a pair of mismatched officers for its hijinks. Take for instance Lethal Weapon, Starsky and Hutch, Rush Hour — and joining their ranks this Friday, director Kevin Smith's Cop Out, which features Bruce Willis and Tracy Morgan as partners. It's an unlikely pairing, but they're obviously not the first to try this formula. Can they stack up against their predecessors? Check out my list of favorites!