For years now we've been waiting for the John Roecker documentary, Heart Like a Hand Grenade, which is the making of American Idiot. John was with the band as they recorded the album, and in 2005 (i believe) they released a short bit of the behind-the-scenes for a TV special on...some channel (it's been a long time. someone can refresh my memory). You can find that 30 minute special on YouTube.
But, good news! John says that the entire documentary is now complete and shared a couple screenshots from it (while working on it). On a bulletin posted on his MySpace he says to "pray to the gods and satan that it can be unleashed". Still no exact date on when it will be out but these screenshots make me excited and I'll keep my fingers crossed.