Where can I get movie recommendations and suggestions based on what I like?

Occasionally you find a movie that you love but that you never heard of before. That is why I love being able to get movie recommendations based on movies I already like. I tried flixster for a while, but there was a lot that made me unhappy with that service. I did the set up on hollywoodvideo, but that went away and all my movie ratings were lost. So where do I suggest you go now. Movielens! movielens.umn.edu/