Found at http://www.imdb.com, the Internet Movie Database (IMDb) is an online database of information about movies, television shows, cartoons, and shorts. The IMDb has an extensive amount of information on works, including basic details such as actors and directors, as well as more esoteric information such as trivia, soundtrack listings, aspect ratios, and alternate versions. Any person with an e-mail account and a browser that accepts cookies can set up an account, then submit information and vote on works.
Though it started out as a collection of Shell scripts created by Col Needham in 1990, it was eventually bought by Amazon.com, who now owns and enforces its copyrights. It can be used as a source of information about movies that you can include in Wikipedia articles, but care should be taken not to copy any actual text from the site or use its ratings or selection criteria. See Feist v. Rural for more details about collection copyrights.