Star Trek Electronic Door Chime - Swoosh!
If you are trekkie, you couldn't have missed the "swoosh". Yeah, the sound that the doors make when you get in or out. So, the good guys at Think Geek, our favorite store have just come up with an interesting gadget - the Star Trek Electronic Door Chime.
Mount one of these on wall by your door and as when some one crosses your threshold (yeah, that's geek for motion sensor) it will alert you with a "swoosh" or if you so prefer , the Red alert sound.
It makes a great gift for a trekkie, or you could just buy for yourself. Costs $29.99 and you can get yours from