For most films, "it's not that bad" can't really be considered a positive review. But for "What Happens in Vegas" - the ostensibly doomed Cameron Diaz/Ashton Kutcher rom-com - it's actually an accomplishment. Despite its insipid premise and often-lazy execution, the film certainly has its moments and, thanks in no small part to several memorable comedic performances, manages to rise beyond understandably low expectations.

The stale plotline - two very different people at rough patches in their lives meet while blowing off steam in Las Vegas, party hard, get married and win a jackpot that they must remain married to claim - reeks of a bad movie Hollywood learned to stop making around 1995. But there are some diamonds in the rough. Diaz and Kutcher, even while playing the two most abhorrent people you'll ever see, are oddly likable and understandable. Rob Corddry (TV's "The Daily Show") steals many scenes as the paranoid best friend/lawyer of Kutcher's character, as does his foil Lake Bell (TV's "Boston Legal"), who plays the amazingly sarcastic best friend of Diaz's character.

With jokes that work surprisingly well and a fitting, if entirely predictable, third act, "Vegas" floats for the most part - and that's quite an accomplishment considering all the things pulling it down.

What Happens in Vegas20th Century FoxTwo and a half of five stars