Metacritic reviews

An exceedingly bright comedy that never makes you feel stupid for enjoying its brisk pacing, smart lines, sound construction and superb comic acting, not only from Ashton Kutcher but from Cameron Diaz and well-chosen No. 2 bananas Rob Corddry and Lake Bell.

Kutcher, who gives his most energized performance to date, and Diaz, darting between the caustic and shrill, look as if they're warming up to groovy hate sex, not love, which may be why the film goes flat the moment it turns friendly.

Sadly, about the nicest thing I can say about What Happens in Vegas is that I didn't hate it - although I suppose that's something.

Their chemistry goes like this: He cleans up real nice; she dirties down with gusto.

This two-seated star vehicle for top-billed Ashton Kutcher and Cameron Diaz wrings a respectable number of laughs from a formulaic scenario about attracted-opposites who bicker and back-stab their way toward happily-ever-aftering.

The stars, despite having only a fraction of the charm and talent of classic sparring-but-meant-for-each-other duos, know how to mug for the camera and well up on cue, and somehow that turns out to be enough to carry this trifle.

Complain all you want about the affable slobs in Judd Apatow comedies; at least they're not tools.

Bland enough to make millions as culture edges closer to oblivion.

The screenplay by Dana Fox (she was one of the rewriters of "27 Dresses") devolves into a series of humiliating pranks that always give the upper narrative hand to the male lead. Talk about depressing. I mean, that's what male screenwriters are for--to unfairly stack the deck against the female leads.

If you're gonna hire one of the funniest American comedians working today – Zach Galifianakis – and shove him to the side of the frame, then frankly, you can take what happens in Vegas, keep it in Vegas, and keep the rest of the us out of it.