Portal

I found this here video at Penny Arcade, and I must say I'm intrigued.

At first, the idea seems kind of boring. And depending on what the ultimate game ends up being, that may in fact be the case. But still...though simple at first, by the end of the video you begin to grasp the kind of really weird shit the game concept could allow you to do.

Apparently the basic idea came out of an experimental design called Narbacular Drop. One of the more interesting things about Narbacular Drop is that it arose out of DigiPen. Which, you'll remember, is a video game university.