This is my favorite site for quickly scanning reviews of any new movie. It collates reviews from dozens of sources, and gives one line synopses of each review, along with a graphical aid of a "thumbs up" tomato or "thumbs down" splat to quickly get a sense of a movie's "freshness" rating. Whenever deciding whether or not to go to a particular movie, I check this site for the reviews, and I also check the rating at www.imdb.com. Of course, some movies, such as any Star Trek or Lord of the Rings flick, I'm going to see *regardless* of any reviews. ;)

ROTTEN TOMATOES: Movie Reviews & Previews