What can I say, I'm a Metacritic/RottenTomatoes whore (oh, lists in general). These 'review' aggregators - critic and user generated - keep me informed of the latest in books, movies, music, etc. There are lists organized by year, actor, etc. Averages are tallied up based on the reviews collected, and for the most part, I find them to be spot-on.
I'd love to see a user-generated site for the Disney parks, various attractions and such. It would take a lot of work, and there have been many quasi-review attempts from other websites in the past... but nothing to match the comprehensive approach of the two sites listed above.