I'll be moderating two panels at PAX East this year.
At 10:30 am on Saturday, I'll be hosting a Sci-Fi Worldbuilding Workshop with my blogger buddies Caroline Willis & Andrew Linstrom. This one is audience participation: we provide some seeds for a world, and the participants split up into groups to flesh out various aspects of it. Come build an original SF world in an hour! The results will be posted on the Net and CC licensed for anyone to use. (Last year this filled up fast, and it's in a hard to find room -- so scope it out early if you want to come).