Re: Putting the Shatner "ego issue" from TOS to rest
Another element that hasn't been brought up in this discussion, Shatner owned a small percentage (5%?) of TOS, so much of his on-set behavior may have been from the pressure of having a personal stake in making the show a success, critically and financially.
Curly: Oh, you hit Santa Claus. Just for that, no toys! --Wee Wee Monsieur (1938)