...in Las Vegas, a bachelor party and a collective hangover the next morning where they have misplaced the bachelor (Justin Bertha) and have no idea what transpired the night before, and you have "The Hangover." Not sold? That's cool. I'm...

...wandering around their room, a tiger hanging out in the bathroom, and a baby just for good measure. Oh, and Doug (Justin Bertha), the groom to be, is nowhere to be found. "The Hangover" is actually impressive on several fronts. Yes, it's...