Using some relatively cheap 22-inch 3M displays, some kids from UMass Lowell's robotics lab have made themselves an awesome head-to-head multi-touch dueling table for StarCraft 2.
Multi-touch is shaping up to be a promising control system for real-time strategy games such as StarCraft 2, where you've got a top-down view of the action and only a few controls are necessary. The $1,600 3M displays can handle basically all the inputs you'll need, including pinch-to-zoom and two finger dragging for camera control. That said, before you all come at me with pitchforks and torches, hardcore StarCraft players know a mouse and a keyboard — for all those hotkeys — is still the best way to go.
The most impressive part of it all is that the game runs on the screens without having to be modified at all. It's not in "multitouch mode," it just works out of the box, which means that you could probably use this same basic setup on any other game, too.
While the head-to-head setup is definitely awesome looking, it does mean that your opponent can sneak peeks at your build order. But on the upside, you can always just reach right over and punch him in the face if he tries to Zerg rush you.