I know of IMDB top 250:  http://www.imdb.com/chart/topAre there other places worth visiting ?
Where can I find (free) recommendations for movies?
webapp rec;movies
MovieLens is a research project at the University of Minnesota that gives movie recommendations based on your ratings of other movies.I believe it was one of the first collaborative filtering systems, created over 10 years ago.Here's its Wikipedia page: http://en.wikipedia.org/wiki/MovieLens