I'll be holding a live video chat right here on this very blog post at 15:00 Mountain time (21:00 UT). All you need to do is go down to the embedded video player below and click play (the little curly arrow at the bottom left). As usual, I encourage y'all to go to my UStream video page so you can participate in the chat room. You can change your name by typing "/nick Davros" (or whatever) so you can be listed with an actual name, and not an anonymous one. If you have some chat software you prefer to use (like mIRC or Colloquy) then the server is chat1.ustream.tv and the room is #bad-astronomy.
Oh -- I'm going to see a movie in a few minutes as a I write this (WALL-E if you care) and I expect to be back in plenty of time to start the chat. If I'm not, don't panic; I'll be back as soon as I can.