The Unseen Video
This site takes you location, finds the weather station closest to it, and then dynamically generates a music video using the weather of your current location! It looks like it basically just cycles the colors, "plants", and ambiant floating "things"...but its still pretty neat. Check out the live one, or also check out the various static versions, including the last one that shows various cities side by side!
Here's a shot of how the program configures the video: