It's OK - the first half is quite funny. Unfortunately, I thought it lost its way half way through. It didn't know whether it wanted to be a dark comedy for adults, or a disney-esque "God in a white suit" shmaltzy romantic comedy.
It's worth seeing - but don't expect it to be darkly comical like "Me, Myself and Irene". Expect more of a mix between The Mask (face pulling) and A Muppet Christmas Carol (Awwww!).