The Enterprise installs a new computer that supposedly will replace manned starships. It does increasingly naughty/illogical things until Kirk and Co. have to try to destroy it. Lots of cheeze, but I really like it.
Highlights:
good premise
Spock vs. McCoy
most of Daystrom’s input
landing party drama
Spock’s insult explanation
interesting non-fascination
Spock vs. McCoy again
Lowlights:
Wesley’s acting
Kirk’s sailing ramblings
Daystrom’s insane musings near the end with SCARY music
cheezy resolution
Spockism: “Computers make excellent and efficient servants, but I have no wish to serve under them.”