Yep. Been a big rush event for a while now. IIRC, Mark Feldmeier was a big part of the first incarnation. Such an awesome dorm. Always making stuff.
It was (is?) a big center of roof and tunnel hacking. One guy from my floor went out every night for a couple of years trying to collect all of Sophicles' sign-ins. And don't forget the Oddball Olympics. I remember the Master Lock picking event usually being won in less than 10 seconds.