TAT, spotted at Open Mobile Summit 2010. Give that watch face a spin, and you'll find a working countdown timer on the back, or browse through icon-based music, weather and Twitter interfaces, a media browser and a Rubik's Cube that spins in 3D space. The firm's calling the setup Dimension S3D, though like most TAT concepts, it's not for sale in its present form -- the company hopes to license the underlying framework to TV manufacturers who want to build menus in 3D, and hopefully attract content providers to build 3D apps as well. TAT wasn't naming names, but said that two "major" TV manufacturers had already expressed interest in possibly signing up. See what it looks like (in just two dimensions, of course) on video after the break.