Prior to this episode, we’d seen only hints that William Shatner could be a great comic actor. The giveaway moment was the storage compartment scene. I had written in the outline and the script that the tribbles fall on Kirk’s head. I had always assumed that at some point, Shatner would say, ‘This makes my character look too silly,’ and I was prepared to have him step aside just before the tribbles fell. But William Shatner has always been the consummate professional and I believe he was eager to show off his comic abilities as well. The moment when he is up to his neck in tribbles, when he gives Dr. McCoy a very annoyed look, that’s equal to any expression that Oliver Hardy ever gave to Stan Laurel at his most exasperated.
See ... Bill ... ACT!
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And even though Gerrold didn't mention it, Shatner butt is always relevant, welcome and downright AWESOME.