The Joker "took over" the Citizens for Batman site with his "Why So Serious?" catchphrase and eerie imagery about how Batman should die. And the most recent viral campaign is a Commit Your Friend site, where Dark Knight fans can upload pictures of their friends to see how they would look in an insane asylum.
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The fifth season of Project Runway debuts tonight, and Bravo has a video introducing the contestants.
Coldplay is offering fans a chance to download a new song, Death Will Never Conquer, which was not included in the band's recent album, Viva la Vida.
Lost may not be back until next season, but fans can join the Book Club to discuss more about the show.
With Be Kanye Now, Kanye West is the latest celebrity to be part of a viral campaign from Absolut Vodka.