i'm sure it would be a tie in the fighting dept. but then Kirk would whip out a phaser...
Shatner may have a bad back, but i am also quite sure that time was a big factor in the use of a stunt double. i remember seeing him monkey flip Jerry Lawler on RAW many years ago (well, it might have been BEFORE there was a RAW, but it was the WWF) and he was 60+ then. he's a legit black belt as well.
the third Doctor is my second favorite, after the Fourth.
David