Boards
Songs with bits in them that sound like other, maybe shit, songs (ruining songs forever-centric)
(part-inspired by the sufjan thread)
there's a bit in Impossible Soul by Sufjan Stevens (about 15 minutes in, lol), which is basically "The Final Countdown" except in a major key.
Also, Flaming Lips - Yoshimi Battles the Pink Robots, pt 2: it's basically the theme tune to Strike It Lucky: http://www.youtube.com/watch?v=rGssqHpkreg