Yeah, awesomeTouch runs some custom Java on top of Linux, although both their hardware and software have most likely evolved since last I saw.. They just did betaSpring, I believe.
LexKY in the house! Our team just got back from Betaspring, we have come a long way since our early days hacking with the NUIGroup / CCV tools: http://nuicode.com/projects/tbeta
We've narrowed our focus to indoor map applications. We're still deploying them on giant touchscreens with AwesomeTouch, but have also started a project called BuildingLayer to aggregate & crowdsource maps for the insides of buildings (because people always get http://lostinabuilding.com). And just ask John King from CNN, the only thing better than games on a giant touchscreen are maps!
Also, hail from Lexington!