Allscifi Spotlight - Sphere: Detailed analysis of the film, and links to similar movies. Sign up to be a movie scholar on the site.
IMDb.com - Sphere: Cast/crew information with user comments, ratings, and other related information.
Sphere: Official Warner Brothers site. Uses Flash plugin.
TV Guide Online - Sphere: 1 1/2 star review with synopsis, cast and crew, and other background information.