Oh, great.
Now you won't just hear those incessant wee-oww-wee-oww sounds when walking through parking lots, they'll migrate to lecture halls and classrooms too. *Sigh*
I found a much nicer use the motion sensor in my laptop: A carpenter's level! This I find truly cool, even if pretty useless.
It must be the incurable geek-wannabe in me.
Geek-geek.