I think John Tucker Must Die is an alright movie, but it could have been much better. The best part about it for me was the comedy, but the storyline was a bit lacking. The characters weren't that believable (to me, an non-American anyway) and they were a tad stereotypical. It's a decent teenage comedy anyway.
In other words, I would recommend it as a movie to watch when you're looking for some good jokes, some funny shots, and some unbelievable scenes.
6/10