Tonight's Denver JUG should be good. The basic concepts meeting is on Hibernate and the main show is on Jabber: XMPP and Jabber Streaming Objects library. Nice! It's snowing like the dickens right now so getting there might be tough. Good thing I live close to downtown! The meeting is actually located in the same building where Julie works.
Update: Tonight's meeting was pretty good, but kinda boring. I didn't learn anything new in the Hibernate session - but I did see Chris do a lot of stuff via command line (vs. Ant). I do everything in Ant, so I was again able to see the beauty of Ant and Hibernate's <schemaexport> task.
The Jabber talk was interesting but dry - probably because Peter and Matt didn't have a presentation or agenda for the meeting. Rather, they just stood up and talked about Jabber and its XMPP Protocol. From what they said, Jabber's streaming XML protocol is being used for a lot of things besides Instant Messaging. It's biggest feature seems to be presence - the ability to know when someone (or something) is online. For using Jabber in your Java applications, you might want to look at Matt's JSO Project. While I'm at it, I might as well mention my article describing how to setup a Jabber Server.