I like his stand up. I originally didn't think much of him in The Hangover. I thought another actor could have done that role more justice. But repeated viewings have made me change my mind a little.
He has to walk that fine line of not over exposing himself with any crap script he's sent and also captializing on his popularity and striking when the iron's hot.
He's not a must watch for me. Like a Steve Carrell is.