Note: THIS HAS BEEN POSTPONED AN HOUR.
I'll be doing another live video chat starting at 3:00 p.m. Mountain Time (21:00 UT) on Sunday May 11. If you look below and see/hear me jawing about astronomy or Doctor Who, then you're good. I urge you to go to the UStream page, though, so you can participate in the chat room (or find/use an IRC client you like; the channel is chat1.ustream.tv and the room is #bad-astronomy). If you want to change your nickname there, type "/nick David Tennant" (or whatever) in the text field.