Rage Against the Machine "Bulls On Parade" epic but censored. Then their second song was struck altogether since they wanted to protest the host, Steve Forbes.
#2 was Ashlee Simpson b/c she's such an annoying dimwit that her lip syncing debale contributed to her disappearance.
#3 Public Enemy (a great episode w/ Jordan as the host)
Damm, a lot of good bands on this list:
http://en.wikipedia.org/wiki/List_of...musical_guests