I have acctually used some chip-tunes in a game that me and my brother was 'developing' - it was called "Knarktr?skets konung" (which translates to something like; Druglord! - Scary isn't? hehe).
The problem was that we where writing it in basic; and we could only figure out how to make it play the first 10 seconds on the track - so if you'd play that game more than 10 minutes you went mental on the music.
We never finished that game. But it was alot of fun - it was an regular buy drugs/sell drugs althou only in swedish + you could only go around in Stockholm + everybody that was selling drugs had the names of our friends so they loved the game.
Edit: by the way - the quote comes from a movie -> Six-String Samurai. Really nice movie
http://imdb.com/title/tt0118736/