I never rely on reviews to tell me how a film is. I find that if I watch a review, I go into the movie with a bias. There's only one review site I trust, and that's the YouTube channel of Spill.com. It's four guys who have different opinions on movies, and they rate movies on a scale of how much you should pay to see it.
Better than Sex (It's VERY rare that a movie gets this)
Full Price
Matinee
Rental
Some ol' Bullsh*t
F*** YOU! (invented for Disaster Movie, because Corey couldn't think of a rating low enough)
Brilliantly funny reviews and a great "how much should I pay?" rating system, and each of the four guys get their own rating, so there's a lot of room for you to decide which of the guys shares your taste in movies.