There was this one kid in 6th grade that was the master of all Middle School thieves.
He would literally open people's backpacks while they were walking, successfully take out their valuables, and close it up without anyone noticing. You could be sitting next to him in class and he could be taking stuff out of your backpack.
Once the word got he had already sold most stuff and ended up selling over $180 dollars worth of used iPods, video games, a PSP, and a DSI, some cell phones, our gym coaches Zune, and that is all that I know about.
He completely got away with it and this is what pisses me off. What makes it worse is that I was his friend.