Los Campesinos! did Pavement's “Box Elder.”
The Killers did Joy Division's Shadowplay
Paul McCartney did “Give Peace a Chance” and Purple Haze.
M. Ward did Scott Joplin's “The Entertainer.”
Molotov did The Misfits' “I Turned Into Zombie.”
Girl Talk covered everybody else.
Amanda Palmer covered Creep and Time is Running Out. Muse. (on ukulele, after she had crowd-surfed to the back of the Gobi tent)