I'm mainly watching Fedor/Rogers and Mousasi/Sokoudjou.
Fedor simply because he's that damn good and I think Mousasi is one of the brightest up-and-comers.
Rogers should give Fedor less trouble than Arlovski. Arlovski has better technique in all areas and would be a real start if it weren't for his glass chin.
The only thing Rogers can hope for is a lucky haymaker to (t)ko Emelianenko.