Fanvids are the often-underappreciated cousins in the fanworks family tree.  Fears of copyright law have kept vidders underground far deeper than writers and artists, even as the growth of technology has allowed them greater and more precise tools with which to work.  But in the beginning, there was a slideshow and a copy of Leonard Nimoy singing "Both Sides Now." 

From MediaCommons:

A vid is a visual essay: a vidder constructs a reading by forcing you to see the text "her way.

" In "Both Sides Now," Fong emphasizes an aspect of Spock’s character which has been a point of attraction and identification for women: his dual nature as a half-human, half-alien caught between two different cultural and expressive traditions. By creating an intertext between Leonard Nimoy the actor and Leonard Nimoy the singer, Fong gives the unemotional Mr. Spock an unexpectedly poignant inner voice that's hard to dismiss, since it's Nimoy’s own.

Why should you view this vid?  Because it's a slice of fannish history.  Because we all stand on the shoulders of the fans who came before us, whether we realize it or not.  Because Leonard Nimoy sings better than Shatner does.  Because if you're familiar with Trek, you're going to laugh in a few places.  ("I've looked at clouds that way," is a picture of Spock at his science console with his viewer.  Okay, I thought it was funny.)