It's so incredibly lame of me, but I still get a little verklempt when, in Star Trek: First Contact, Vulcan #1 takes down his hood, gives The Sign, and tells Zephram Cochrane to "Live long, and prosper."

And then they do a wide shot of Cochrane offering his hand for a handshake, and Vulcan #1 tentatively taking it, and oh, Star Trek.

[/lame]