Wow, shit, I totally forgot the actual address!
It's at 3914 Spruce St, in University City just west of the Schyukill River. I live on UPenn's campus, in the Pi Lambda Phi fraternity house, which has a long and notorious history of throwing rogue rock shows and various other mischief, and generally being a haven for weirdos and excess in all forms.
And if Om played my house I would cry tears of joy. I think the other band who I recently mentioned playing the house was Clockcleaner (who, by the way, live up to a good portion of their reputation for being total assholes ... or at least Sharkey does). In past years we've also hosted Q And Not U, Nada Surf, Stinking Lizaveta, Burning Brides, The Bevis Frond, Bardo Pond, The Low Budgets, even Wesley Willis if I remember correctly.
Anyway, you should come. It's going to be awesome. Hint: bring an opaque container for tasty amber and brown liquids. I had a keg of Newcastle in my room last year and I'm accepting recommendations for this year's libations. The opaque container is for shade purposes, to evade The Man.