9. Luke Wilson
Unlike his brother, who's generally a bit more outgoing and confident and popular and better-known, Luke Wilson comes across as the more serious of the two, and despite appearing in a number of comedy movies and being recognized as a member of the Frat Pack, there's been a notable lack of laughter. Luke Wilson is generally a calming presence amongst more physical and animated members of the crew, but his seriousness can often get the better of him: he's pretty dull, and he's pretty wet. Not to say there's not a place for Wilson as the guy that the girl will end up with after she realises that she's been the wrong person for the length of a middling romantic comedy. As far as comedy stars go, though, Luke Wilson isn't an actor you can balance a comedy movie on. And for somebody who has had the chance to prove their comic chops time and time again, the results - so far - are look pretty thin.