Ever worried about your laptop getting stolen? (I mean, how could you not be knowing how many normally are?) Anyway, one woman who had her laptop stolen managed to recover it because her husband was running SETI@home software (Yeah, the satellite being used to find alien contact) on it and through this software was able to find where her computer was accessing the internet.
SETI(at)home, uses volunteers’ computers when they go into screen-saver mode to crunch data from the Arecibo radio observatory in Puerto Rico. The computers are trying to spot signals in the radio noise from space.
For more info on SETI@home, click here. You realize by doing so you are declaring yourself a helpless nerd, but a helpless nerd who may never lose his laptop again.