Thanks for the plug, Sean (skmurphy).
I host Hackers and Founders (www.hackersandfounders.com), and we get together every couple of weeks to tip a pint and have a chat about stuff. About half of the people that attend are pretty active on Hacker News.
If March 25 doesn't work for you, drop me a line, I might be able to schedule a meetup for you that works with your schedule. It would be a shame to come to Silicon Valley for a while and not be able to hook up and chat with interesting people. That's really why you're here.
The New Tech Meetup: http://www.meetup.com/svnewtech/ happens fairly often and seems to pretty popular. If you can't get in via RSVP, just crash it. A lot of other people do that and they don't seem to get hassled.