Galileo 7
I'm rewatching Star Trek because it's awesome. I love Kirk and Spock and their friendship especially (basically I'm a walking stereotype).
So, of course, Galileo 7 is a bit disappointing, given that there is almost no interaction between them.
Then I realized that they work together to save the ship at the end --
Kirk keeping the ship at space normal speed, and Spock dumping the shuttle's fuel.
How awesome is that?
(In other news -- Hi everyone! Long time, no see!)