Spock: Each of us... At some time in our lives, turns to someone - a father, a brother, a God... And asks..."Why am I here? What was I meant to be?"
In the final scene on the bridge, Spock and McCoy are wearing colored arm bands which identify their departments: Spock's is orange (for Science) and McCoy's is green (for Medical). In the very last shot, Spock is wearing the green band and McCoy is wearing the orange one.
Mark Lenard, who played Spock's father, Sarek, in the original series, is the only person to play a Romulan ("Balance of Terror"), a Vulcan (Sarek), and a Klingon. He played the Klingon Captain in the final Klingon ship to be destroyed by V'Ger.