Some of you have probably come across these on You Tube - Literal Video Versions. Essentially, witty fans sync up a karaoke track to its music video, and alter the lyrics to render literal descriptions of what's happening on screen. They have mixed results, I must say. But someone just hipped me to the literal version of Billie Jean, which is quite good:
My favorite remains the literal version of Tears for Fears' "Head Over Heels"