On the set, [Bennett] recalls, Bones (DeForest Kelley) was a "kind healer who kept the big egos from tearing each other apart," while Kirk (William Shatner) was "a study in being the matinee idol — brilliant, energetic and rather full of himself."
We comment during an iChat:
LENE: how can he not be full of himself? Himself is awesome and overflows the human container
KITTY: Yeah - it's surprising his awesomeness hasn't burned out the human container, kind of like Sargon in Kirk's body. But more awesome.
We can hear it all the way across the galaxy!