I'm gonna go one further and say the entire TOS crew. They sacrificed their careers and their lives in order to save each other. The branch of friendship first being extended by Spock by sacrificing his life in TWOK.
I have to say for a guy who had "no emotions" he certainely had a big heart.
The one I enjoyed the most was the Picard/Lwxana Troi one. The way she chased after him, showing no sense of control, no self-dignity and the way he just cringed in horror...well, I laughed till I cried.