Vivi, a well known overclocker from South Africa, did some cool videos recently to give people an introduction into subzero overclocking. He covered different aspects of testing and seems to have a never ending stream of videos continually updating at his youtube channel. Make sure you subscribe to it!
His weapon of choice is GIGABYTE Z77X-UD5H and 3770K. Check out a few videos he put up overnight. Good stuff Vivi!