Know when those pesky spie sats are over head!
This is a reall cool site that lets you track any sat you want in real time and see where and when it will pass over a certain place. You can click and drag the planet to see where sats will be and see all the orbits near and far and get info on the sats themselves.
Have it on at work and when someone asks what it is tell them with a scornfull face that THEY are watching us right now as you point your finger at the screen while getting a sheet of tinfoil from your desk and fashion it into a hat. At the very least you will get fewer unwelcome chitchatters by your desk or office.