(YouTube link)
The train station in Osaka, Japan has a computerized fountain that spells out the time, announcements, and pictures in falling water. If you spend too much time waiting for the clock to display, you'll realize what time it really is ...time to find a restroom! See more pictures and video at the uploader's site. Link -via Everlasting Blort
http://www.neatorama.com/2007/01/26/waterdrop-pixels-the-jeep-waterfall/