Mirror's Edge is a "first-person platformer" for the PS3 and XBox 360... apparently, it's a game built around the concepts of parkour (http://en.wikipedia.org/wiki/Parkour). There's some combat involved, but the game basically revolves around using the environment to get from point A to point B as quickly and efficiently as possible. Neat idea.
Here's the HD trailer (http://xbox360.gamespy.com/dor/objects/949455/mirrors-edge/videos/mirrorsedge_hd.html).