That actually wasn't a bad movie. From all the adverts I put off watching it because it looked like another boring old American comedy (lets face it, they're running out of decent scenarios). It was actually funny (most of the time, but not all), and one of the main reasons I liked it was the ending. It made me laugh at the unexpectedness of it, and it was a perfect way to close. It avoided a rubbish ending very well indeed.
If you're looking for a comedy that is a good laugh, a good romance, and a little bit crude (or a lot, depending on how you look at it..), then this might be a good option for you.