I feel the same, chemistry or not, the pressure is there. If you feel the chemistry you don't want to mess it up. If you don't feel it, you end up with those dreadful moments of silence...
I find that all the celebreties mentioned are hot, and they should be as they have the financial means to keep on doing exercise, eat healthy and look after themselves.
Now, the really hot ones, are the over 40 women that not only work all day, but have children, husbands etc etc and still manage to look good.
RE: what kind of race you're interested in?
Car race?