Yaaay, my favorite can-you-think-of-the-nastiest-way-to-kill-a-person game, Postal, was previewed on Comic Con in Tucson.
It was the only actual game on the show and it attracted quite a lot of attention, but we’re confident it would’ve done the same if it wasn’t alone.
The game is currently being developed for Xbox 360 and PC, and will use HL2's Source engine. It's officially scheduled to launch "sometime in 2008," so we'd say somewhere around Xmas.
(Thank God we don't work in the same office.-sub.ed.)
You can view some screenshots here.