Ebert's Great Movies - An appreciative look at the plot and characters. - http://rogerebert.suntimes.com/apps/pbcs.dll/article?AID=/19990628/REVIEWS08/906280301/1023
Rotten Tomatoes - Several reviews and reactions from critics. Includes some general movie information. - http://www.rottentomatoes.com/m/star_wars/
Brunching Shuttlecocks - Review by the Self-Made Critic. - http://www.brunching.com/starwars.html
Hollywood Jesus - Christian review. - http://www.hollywoodjesus.com/star%20wars%20reid.htm
All-Reviews.com - A collection of reviews, plus facts about the movie. [Overall: 4/4] - http://www.all-reviews.com/videos/star-wars.htm
Washington Post - A small selection of critical reviews. - http://www.washingtonpost.com/wp-srv/style/longterm/movies/videos/starwars.htm
Allscifi - Very detailed analysis of the movie, and listings of similar ones, with literary elements and themes in the movie. - http://www.allscifi.com/Topics/Info_3625.asp
New York Times - A favorable review from 1977. Free registration required. - http://www.nytimes.com/library/film/052677wars.html
Movie Review Query Engine - A directory of links to many online reviews. - http://www.mrqe.com/lookup?^Star+Wars+(1977)
Apollo Movie Guide - Review [85/100], with user ratings. - http://www.apolloguide.com/mov_revtemp.asp?cid=29