Nine Inch Nails
Was reminded of this ARG after the shooting this morning.
https://www.youtube.com/watch?v=1MYKI1ij0Gk
http://yearzero.netninja.com/mirrors/20070617-1717/bethehammer.net/?f=mirrors/20070617-1717/bethehammer.net
I really wish they would've made a show out of this.