The Hangover is officially the summer's biggest breakout hit. Its closest analogue is Wedding Crashers, which, four summers ago, was carried by positive word-of-mouth to a final gross nearly seven times its opening weekend. The Hangover has bigger raw numbers, but its second weekend drop -- 25% -- is comparable. For a film that opened to $45 million, and without any sort of holiday boost, that's pretty remarkable. It will have some competition next weekend in the form of Year One, but it may not matter much; its word-of-mouth appears to be the stuff that dreams are made of.

Pixar's Upis also going gangbusters in second place. It is now running a mere $4 million behind Pixar box office champion Finding Nemo. At this point it's anybody's game.

The weekend's two wide openers -- The Taking of Pelham 1 2 3andImagine ThatImagine That opened pretty much to expectations. Pelham did a respectable $25 million, which is pretty close to previous Denzel Washington-Tony Scott collaborations (Man on Fire and Deja Vu). And Imagine That's $5.7 million pretty much precisely mirrors the opening of Eddie Murphy's Meet Dave this time next year. Murphy really needs to do something to shake things up a bit.

The full top 10 after the jump.