If you're into ambient music -- and I didn't think I was until I heard this -- take a look at 9-beet-stretch.

It's Beethoven's 9th Symphony stretched out in time so that it takes a complete 24 hours to play through. That's about 20 times slower than normal. I don't know how the stretching was done so smoothly, while still maintaining the rich textures of voices and stringed instruments. It's downright wacky, I tell you.