After seeing what could be done with Ghost Recon Online, I'm actually really excited to play it for myself. It seems that the game will also be a downloadable game and not in store retail, so the price might be very good too.
Killer Freaks looks very early and rough but at the end when the developer was explaining how the gyro and accelerometer can work together with the two sticks with small movements (not the crazy stuff they were demonstrating) for aiming and gunning, that got me very excited for the possibilities for other first person shooters.
I did an article on this very subject before the Wii U was revealed a month ago:
Wii 2 (Project Cafe) how controlling FPS games will be awesome
I'd love to see a game like Battlefield 3 have this type of control as well.