Daft Punk's Contact vs Stanley Kubrick's 2001: A Space Odyssey
Made. My. Day.
On a whim, I tried playing Contact against the end segment of 2001 and it synced up flawlessly. The film and song aren't edited in any way, they both play out in full duration. It's incredible how well they match.
Watch it now.
[hat tip Dorian Lynskey]