There's something to be said about watching characters toy with bizarrely impossible situations, as in "Turnabout Intruder," a perfect example of style over substance. This is little more than an excuse for Shatner to engage his overacting skills at full throttle. (Say what you will about his acting choices, but the bottom line is that he's entertaining.) Is the story remotely plausible? Probably not, even for Trek.
But I can't help myself; this episode—in which Kirk's consciousness is swapped with that of the insanely jealous Janice Lester (Sandra Smith)—is just too entertaining to deny. The concept arises from Lester's former relationship with Kirk gone bad, combined with her deep-running rage over being rejected by Starfleet. She wants his command of the Enterprise, and then wants to stomp on Kirk until he dies.
There's a mad zeal in Shatner's scenery chewing that's appealing, as the Lester-as-Kirk abuses of captaincy extend beyond any realm of sensibility, causing the entire crew to turn against "the captain" one by one. The most interesting aspect of the plot is watching the other officers try to deal with this mess, as they watch their captain descend into lunacy while Spock continues to claim that he isn't their captain. Eventually, Scotty and McCoy are whispering mutiny in the halls. Is this episode in good taste? Not likely. (Some sexist overtones are the most uneasy.) But good fun? I'm inclined to say yes.
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