So, so much funnier than I expected.
Just seeing this picture makes me giggle again.
We saw an advance screening of Hot Tub Time Machine last night and while I expected to be amused by the movie, it exceeded my expectations. I enjoyed The Hangover but I laughed harder and more frequently while watching HTTM. Outside of a slightly sluggish section in the second act, the laughs are constant and the humor ranges from lowbrow, to winking, to charming, to just being funny for funny's sake.
Yes, you are going to want to see this movie when it comes out later this month. Probably twice.