That's SO cool! I'd love to have something like that in my house...we get all sorts of annoying flying bugs that dart into the house as soon as a door is opened.
Brings up some fun questions though:
What do you feed it when there are no flies around?
How often does it need to "eat?"
When you do feed it...do you have to feed each "mouth?" LOL
Have you ever let it "bite" your finger? What does it feel like?