I like the film database here, but it sometimes is lacking in newer films, as people need time to view them and THEN post their experiences with it.
However, I've used a couple of sites that have helped me decide whether a movie (new or old) is right for an emeto like myself.
kids-in-mind.com - Provides total Blow-by-Blow details about the movie, telling all the details about everything sexual, swearing words, violent, or gory about the movie. (Including v*)
commonsensemedia.org - If you can't find a film on kidsinmind, you might be able to find it here, but it's not as in depth. However, it gives info about TV shows as well, and even video games!
I hope this helps some people. It sure has helped me!