"The Hangover" is crude, vulgar, incorrect and so many levels...and ultimately hilarious.
It's the Vegas movie that Ashton Kutcher's "What Happens In Vegas" wishes it was. The characters here are quite memorable, although there are two or three that fell curiously flat (the Vegas wedding broker for starters) and some lines that were just profanities thrown to the wall to see what will stay and be laughed at. Fortunately, "The Hangover" runs at a mere 96 minutes, so it doesn't overstay its welcome and has a vulgarly hilarious stay-through-the-credits ending.