<p>Yeah, I saw it today when I was leaving work. It's at McCarthy Quad. They have a huge bonfire setup in the middle of the place, plus there are tons of crews and everything. As for extras, they have signs saying if you don't want your face in the movie to stay out of the area.</p>
<p>I'm gonna go check it out now...it's gotta be cool!</p>
<p>k, as of when I left at 9pm, they had begun filming the scene. As the OP's link says, it's some flashback scene, etc. Security is quite relaxed, they're letting spectators observe from the pool in front of Leavey and they're even allowing pictures to be taken when filming is not in progress. But when I left, they've been shooting the same 30s. scene over and over, taking 10 mins in between to reset. I was bored, so I left.</p>
<p>It was pretty cool. I saw Jim Carrey and the director of Phatom of the Opera/Phone Booth-Joel Somethingorother. Pretty neat to watch. We got to get pretty close to the filming, and were within 100 feet of Jim Carey.</p>