Well, this is a little off-topic, but it's really cool.
I came across this video yesterday, and it's really clever. I tried it on a few people over AIM and it really worked. All you have to do is ask them a few questions. Trust me, it's really original and kinda cool. Being the genius I am, I still can't figure out how it works, but it does apparently. I haven't gotten any girls with it yet, which is surprising.
Anyway, try it on all your friends! Here's a tutorial. Mind the poor quality.
"How to Confuse an Idiot"