I did get selected for the JSC tweetup next week.  I'll be heading down to Houston to meet an astronaut, see mission control, and visit other training facilities.  Pretty neat stuff.

Well, I wasn't selected for the first NASA tweetup.  I signed up for the "runner-up" tweetup at JSC.  Still pretty neat, getting to see the Mission Control Center during a running shuttle mission.  I'll find out if I was picked in a few days.  I'm trying not to get my hopes up.