Eternal Sunshine of the Spotless Mind: Official site with synopsis, production notes, pictures, cast and crew, and desktop wallpapers. [Requires Flash.]
Internet Movie Database: Eternal Sunshine of the Spotless Mind: Synopsis, cast and crew list, trivia, multimedia, and links.
Lacuna Inc.: Official site for a fictional company featured in the film that erases the personal memories of past loved ones. Includes overview of the film and trailer.
Mooviees.com: Eternal Sunshine of the Spotless Mind: Features synopsis, trailers, pictures, cast and crew.
Rotten Tomatoes: Eternal Sunshine of the Spotless Mind: Reviews, multimedia, and forum.