twisst: Twitter the ISS
If you're a Twitter user, you can now receive an alert from twisst when the ISS will be passing over your location!
If you don't use Twitter, don't worry, you're not missing much. You probably have a life already.
If you don't know what the ISS is, well, really, HEL-LO, Earth calling Luddite!!
nothing more to see. please move along.