I never know if repeating these posts helps or not. Oh well. I'm doing it anyway.
I'm doing another live video chat starting at 15:00 Mountain Time (21:00 UT) on Sunday June 15. I've embedded the stream below; if you see glare off my bald(ing) head, then we're live. 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 server is chat1.ustream.tv and the room is #bad-astronomy). If you want to change your nickname there, type "/nick Billie Piper" (or whatever) in the text field.
Some potential topics for the chat: Hubble servicing mission, GLAST, organic compounds in meteorites, TAM 6. A search on this blog will turn up lots of things on these and other subjects!