I could never vote for a guy who stands with his arms by his side so robotically like that. Gives me the heebie jeebies. I didn't vote for McCain for the same reason, and I'm not about to start now.
McCain gets a pass on that--and the wonky bulging jaw--from me because I'm pretty sure they are partly the result of injuries sustained in combat or prison. Similar story w/ Bob Dole, if you ever noticed; I think one of his arms or hands was paralyzed, basically a club, from an injury in the big one.
Romney, on the other hand, is just a plain stiff.