Many:
Atease - Radiohead Forum
Shrinking Universe - Muse Forum
FOruM - Fear of Music Forum
Glass Prision - PWNING Forum
Oddworld Forums
Thats it, there are many many more but those are the ones where I have about 100 posts on each. Except the Muse one coz it has only just been rebooted and I lost all my posts
Oh, and my bands Forum! But it died