Great episode! I'm sure if you're reading this you thought so too. All those who are glad our favorite doctor is back grab your skateboards and meet me on the Princeton University campus. That's where that skateboarding appears to have taken place. Much, if not all, of the old "cobblestone" walkways were re-done with those more modern bricks. And House appeared to be joggin along Lake Carnegie which runs along the campus as well. He also jogged through the campus. There is no hospital on the campus of Princeton University and there is no medical school there....but that's what it would look like if there was.
I wonder when the filming was...would love to catch a glimpse!