I'll admit it was the Steve Carrell which drew me to this ("Where did you get a hand grenade?" "I don't know!") and the film had a very low Carrell-factor. But that was entirely as it should be being an ensemble film. If anyone stole the show it was Alan Arkin, but he's had years of practise.
The film also had the side effect of exposing people to the word 'dramedy' as I try to explain to them that while the last fifteen minutes had the audience rolling around on the floor laughing the film isn't really a comedy.
But that fifteen minutes, hoo boy.