Unfortunately, Vaughn repeatedly crosses the line between persuasively playing an obnoxious character and coming across as nerve-gratingly self-indulgent.

Difficult Second Movie hurdle negotiated. Just.

If the film's too ready to go with the flow of Chris Doyle's handheld camerawork, and sometimes seems ad hoc, its spot-on attention to the faux pas of the moment certainly raises a smile.

Slick suits, hip urban nightspots, and an over the top performance by Vince Vaughn make this rambunctious farce an enjoyable and unpredictable movie with some obligatory fist fighting.