This mashup of Star Trek with Kesha's Tik Tok just makes me really really happy.
Turns out there's a whole mess of Kirk/Spock musical slash fiction (mash fiction?) on YouTube...there's Kirk/Spock vs. Lady Gaga's Monster, Kirk/Spock vs. She Blinded Me With Science, Kirk/Spock vs. I Kissed a Boy, Kirk/Spock vs. Jerry Mungo's In the Summertime, Kirk/Spock/McCoy vs. The Beatles' Come Together, Kirk/Spock vs. You Spin Me Round and many more. (via david)
Update: And here is Kirk/Spock vs. Closer by NIN, perhaps the Citizen Kane of Kirk/Spock musical slash fiction:
(thx, mark)