The people putting on GIS Day at Kansas University tomorrow built a Google Maps mashup showing where are the presenters and attendees are located. That's a lot of people. I hope they like listening to a .NET geek ramble on about GPS :)
They are going to video record each session, so if you don't get a chance to make it (Kyle), you'll still be able to join in on the fun. They will also be posting the slide deck from each session.