This video by Dutch national public broadcasting corporation VPRO is a great introduction to quants, algorithmic trading and what part they played in the financial crisis.

From the description:“Quants are the math wizards and computer programmers in the engine room of our global financial system who designed the financial products that almost crashed Wall st. The credit crunch has shown how the global financial system has become increasingly dependent on mathematical models trying to quantify human (economic) behavior.”

Here I am talking about how businesses are using crowdsourcing. Being paired in the same video with Don Tapscott is pretty sweet.