New York Times Movie Reviews (1929- present) - browse or search 28,000 NYT movie reviews. Included in the free review archive are all films reviewed since 1960.
The Best 1,000 Movies Ever Made - reviews from New York Times film critics.
senses of cinema - an online journal from Australia. Use the search box to find articles. Also, see the "Great Directors" tab for biographies on directors, such as Hitchcock and Chaplin.
JonathanRosenbaum.com - film critic for the Chicago Reader. Search the year you're interested in on the right and enter titles in the search box. ( not working)
Cineaste Magazine - a couple articles from the current issue are available free, but articles and reviews from past issues cost 2.99 per item. See the Web Archive tab on home page for a variety of free previously published articles.