
There are some things that you just won't learn about the band by looking at Wikipedia or watching TV specials, but only by browsing the fan forums. I thought that it would be a good idea to have one place to organize such essential information.
So, please submit whatever you think every new fan needs to know. I'll start (feel free to edit my post if I'm wrong or to add new info, this is off the top of my head).
Mercy (shown in the video below) is often considered the "Holy Grail" of U2 songs. It is a leftover from the How To Dismantle an Atomic Bomb sessions that found our way to us because a fan was given a copy of the album with the song on it.