Microsoft is on a winner here

I can think of way too many cool ways to use the technological potential shown by this table. Watch the video and try to come up with some other ways to use the table (or slightly larger versions of it.
In addition to the card games mentioned, can you imagine the fun you could have playing all the old regular board games on the screen like Monopoly, and Pictionary. I think that the real fun though would come in games like Risk, where battles could be played out on screen with some player involvement. The new territories could change colour when captured and certain victorious pieces could gain hero status and the like.
D&D players would be in a whole new world, with scenarios popping up in front of them as they move their characters through a new world without ever having to wait for turns. Each player can interact with the screen and their character at the same time. Real time battles could be experienced by multiple players on the one screen, and the fun shared together (not a whole lot different from regular console games with multiple controllers but you get the gist, no need to split the screen!).
Mix this surface computer with Microsoft's other surface computing technology (video found here) and we'll almost be at the same level as star wars. Still a short while away from Star Trek though.

You can also check out the Microsoft site's promo of the 'Surface' computer here