There are some moments to treasure, but Todd Phillips' "The Hangover Part III" mainly becomes less a comedy and more a contract obligation. In trying to be different from its predecessors, the backbone story of this third installment breaks away from the pattern that made the first film a surprise hit, which actually has its share of ups and downs. With no wedding, no bachelor party, and no drug-induced amnesia to offer in its basic premise, it avoids becoming a genetic