GroupLens Research has collected and made available rating data sets from the MovieLens web site (http://movielens.org). The data sets were collected over various periods of time, depending on the size of the set. Before using these data sets, please review their README files for the usage licenses and other details.
100,000 ratings from 1000 users on 1700 movies.
1 million ratings from 6000 users on 4000 movies.
10 million ratings and 100,000 tag applications applied to 10,000 movies by 72,000 users.