There are a lot of terrible TOS episodes, IMHO, but Spock's Brain is similar to The Savage Curtain or The Gamesters of Triskelion - bad in a goofy, entertaining, B-movie sort way. It's disappointing that Trek's quality dropped that low, but it's still entertaining for the same reason that watching Troll 2 or something is entertaining.
On the other hand, I can't even get ironic enjoyment out of snorefests like The Paradise Syndrome, The Cloud Minders, And the Children Shall Lead, etc.
Bottom line is ridiculous shit is better than boring shit.
On the other hand, I can't even get ironic enjoyment out of snorefests like The Paradise Syndrome, The Cloud Minders, And the Children Shall Lead, etc.
Bottom line is ridiculous shit is better than boring shit.