HARO Online: 21 Grams
Contains review and movie stills.
Internet Movie Database: 21 Grams
Contains plot outline, image gallery, trailer and news articles.
Mooviees!: 21 Grams
Features photographs, trailers, reviews, cast overview and synopsis.
Movies.com: 21 Grams
Features movie stills, synopsis, trailer and news.
Rotten Tomatoes: 21 Grams
Includes movie stills, reviews, trailer, news, cast and crew.
Yahoo! Movies: 21 Grams
Includes synopsis, trailers, production images, cast and credits.