The website for the word-renowned institution devoted to preserving the American film heritage. This site includes access to their catalog of film information as well as their retrospective lists.

An online database offering access to films, images, and texts from 23 European film archives. A great resource for finding primary sources on early European films.

One of the largest online resources for movie information in the world, IMDb includes biographical information about films, actors, directors, and more. It also include trailers, links to outside reviews, and press information about films.

The Media History Digital Library is an organization devoted to digitizing classic media periodicals that are in the public domain. A great place to find primary sources.

An online aggregator of critic and user reviews. Metacritic covers film, television, video games, and music, and provides links to outside reviews.

A digital magazine for international cinema and film culture. Updates daily.

Reviews from the top critic Roger Ebert from 1967 to the present day. Also includes his interviews with filmmakers and celebrities, essays on film, retrospectives on older movies, and the Movie Answer Man columns which answer questions about film from readers.

An online aggregator of critic and user reviews for current and older films. An excellent way of tracking opinions on new films as they develop as well as see the collective opinion on past films from professional critics and the general movie-going population.