60hz isn't too hot for games.
Bravias are awesome tvs. Get it if you like it. I suggest going to see it in a store though.
This too.
Potentially outing myself as A Big Stupid here, but 60Hz mean the screen is refreshed 60 times in a second, so you're looking at straight 60fps display right there. Sure, I've played on 120Hz displays on PC and I can see the difference clearly, easily... those games are built to display at whatever my rig could handle. If it was able to handle 60+ fps, it would show it, life was good.
But if a game is locked to 60fps on 360 or PS3, there is -no- advantage to owning a 120Hz display, is there?