Popular electronics weren't the only things sporting discounts on Black Friday. Crude oil, gasoline and diesel prices also hit lows. 

In 3 minutes, see what forces led to weaker oil prices. OPIS Chief Oil Analyst Denton Cinquegrana explains, with in-depth charting, the fundamental forces at play. And you'll see historical price comparisons at the nation's retail gas pumps.

Watch what happened and see what's coming next!