I LOVED it! The first half an hour was some of the funniest stuff ive seen in ages, the whole cinema was laughing. What makes it funnier is that Will the nice guy is saying these horrible things. Then theres the twist and it turns into a good story line. I guess it is sort of like "i am legend" the way the movie suddenly changes, but they couldnt just have a whole film of one line jokes.
Anyway i wont say anymore so i dont spoil it, my friends liked it, the cinema was packed and laughing, i think its gonna do really well.
Oh word of warning dont walk straight away at the end, stay sat down.