Nick Muntean and the Zombies
Zombies attacked American Idol 5's Austin auditions.
We see a group of zombies wandering around outside near the lines, but why were they there? To tell us that "Television rots your braaaaaaains!"
Where did they come from? Nick Muntean, a University of Texas at Austin graduate student organized the group via craigslist in order to attract attention to the fact that television melts your brains.
The American Idol staff apparently caught wind of the plan and were waiting for the zombies. The staff was right there to happily film them.