Collider.com posted an interview with George Lucas by Jon Stewart at Celebration V. I haven't had a chance to watch it yet (it is an hour long) but I'm sure it will be interesting.

http://www.collider.com/2010/08/15/jon-stewart-star-wars-celebration-v-stormtrooper-george-lucas/

Many people questioned Stewart when he didn't ask the hard questions when he interviewed Lucas on the Daily Show in recent times, this is why. You won't get invited to Celebration V and have a action figure made of you.

Not that I'm criticizing Stewart, I love him. And I thought his questions on the Daily Show were fair without outright attacking Lucas and the prequels etc.