Allscifi Excalibur Spotlight: Very detailed analysis of the movie, and listings of similar ones. Sign up to become a movie scholar on the site.
Excalibur the Movie: Reviews, graphics, soundtrack information, sounds and script.
Helen Mirren Appreciation Society - Excalibur: Sysnopsis, and comments on the parts played by several actors, in particular Helen Mirren as Morgana.
IMDb: Excalibur (1981): Cast and crew, plus additional information about the film.
TV Guide Online: Excalibur: Brief review and synopsis.