FF13 is a given, but after playing the GoW3 demo, I'm not so sure it's going to live up to all the hype.
I just finished Bayonetta recently, and that game just seemed so much more fast paced and "cooler" than GoW.
*runs and hides from the GoW fans*
Been playing the GOW III DEMO since January, over and over again: I expected a bit more out of it. It feels like GOW II with better graphics, bigger enemies... and little else. I'm hoping the final release has more to offer. Still, I'm getting this one definitely.
As for Bayonetta: great game, camera rotation gives it an extra point, but not 1/2 cooler than GOW. IMO, nice to rent, wouldn't buy.