While I think enough has been said about the Kanye West-Taylor Swift fiasco, it should be noted that this incident has precedent.
During the 1993 MTV Video Music Awards, Silkworm of Digable Planets came on the stage after k.d. Lang won an award for Female Artist of the Year. According to completely real and not made up press accounts, Silkworm declared that Annie Lennox's "Walking on Broken Glass" was "one of the best music videos of all time."
Oh wait, that never happened?
In any case, the parallels between 'Ye's outburst and U.S. Rep. Joe Wilson's interruption are borderline scary.