Mirror's Edge dazzles; gameplay video
"We take all the best bits of Trinity running along, leaping around with guns and shooting whilst falling backwards off buildings in The Matrix trilogy, but do it first person and make it all happen in 'the real world'..."
That's basically what the game says to me. And it is a good thing because of that.
A mixture of parkour, puzzle solving (how to get from A to B via 100 obstacles) and gun-toting action, this video of Mirror's Edge shows the promise this game holds.