Work of art? Sony?
Yes. Not a product, but the commercial for a product. For the Sony Bravia LCD TV to be exact.
What's so special? Well, they took 250.000 bouncy balls, and launched them off a hill in San Francisco. They could have done it with Computer Graphics, but they did it for real instead. Add some nice music to it and film it with high speed cameras, and the result is stunningly beautiful. I think it's also the first television advertisement with a website dedicated to it, including behind-the-scenes footage.
You need Quicktime (or something compatible) to play the videos. Be sure to check out the 2.5-minute extended version in its h.264 high quality version.