I came across this when I was doing some googling, and I thought I'd share. Bearing in mind that all this gender prediction stuff is basically a bunch of hooey, this one is admittedly a little freaky! Once the needle starts moving, it gives you your whole baby story. The ones you've had, the one you are expecting, and the ones you will have in the future.
I tried it, obviously, and it said girl-girl-boy-girl, and then it stopped. I have two girls, I am positive that the baby I lost last June was a boy, and I have a very strong girl feeling this time. Neat, huh?! Give it a shot, and let me know how it worked for you!