I'd be down for a good old fashioned hang out, as blAAAm said before.
As far as annual meet ups go, something that has worked for a bunch of my WoW buddies and I is having some other event as an excuse for the meet up. We all go to PAX every year and on one of the nights we rent out a room at the Tap House (it's a bar/restaurant in Seattle) and all hang out for the night. Some of us roam PAX together during the whole weekend too.
PAX East could be a good place for an annual meet up IMO =D.
Wait, they have those things on the east coast, too?! *intrigued*