I have a table or two. As usual, I just bring interesting things for people to toy around with that they might not have fudged with before. I expect to bring a Supergun/Jamma stuff and some interesting and not-often-seen consoles/games. Some form of Neo Geo, I think, and a heaping helping of multiplayer stuff.
I feel the need to mention that, if you're interested in this sort of stuff, you should probably mosey on over to ASSEMbler's website at www.assemblergames.com