Way “Too Out There”
Fans agree on many of the worst episodes – like where Spoke jams with space hippies.
But Leonard Nimoy was the most embarrassed by the one called “Spock’s Brain” – where his brain was stolen by aliens. But, for some reason, Vulcans can live for 48 hours without a brain before they die. Nimoy even wrote about it in his book as being horrible to shoot.