If you've never hear of this, you need to check it out. It's brilliant. My friend Bill showed me this some time ago and I couldn't believe what I was seeing. William Shatner and this song were made for one another. If you have to have it explained to you, you'll never understand.
The video quality is a bit rough but than, it was 1978. Enjoy.
Later, this was parodied by The Family Guy. Brilliant!