How To Get Old YouTube Layout Back (Tutorial November / December 2012)
DOESN'T WORK AS OF JANUARY 9TH 2013
Very easy to do in chrome, or firefox, just open up console and paste this cookie there.
document.cookie="VISITOR_INFO1_LIVE=qDpUsBNO0FY; expires=Thu, 2 Aug 2020 20:47:11 UTC"