Now, as Lu pointed out, the hottness factor is somewhat down in the men. However, I think Cristian is the forerunner in this category. Plus, he's got that spanish thing going for him. Me loves an accent! For the women, there are several good choices. For sheer sex appeal I gotta go with Shannon Elizabeth. Who could forget her in "American Pie"? Watch out though guys, she's got a lot of practice with hustling in her many poker championships.
In looking at natural talent I would say that Kristi Yamaguchi has a huge advantage over the other women. Basically Figure Skating is like dancing on ice so this should be a snap for her. I think that R&B star Mario has got the ability to dominate the men on this one. Unless there is a sleeper here that I'm not aware of.