Why is Gas so Cheap Right Now?

The other night I completely filled up my truck for $35 at $2.39 per gallon.  I was astonished.  I hardly ever pay attention to how much gas costs because hey...it costs what it costs and I need it so I have to buy it and it's never on sale.  I always notice sales so I definitely noticed that it only cost me $35.

Every newspaper and website I read have tackled the reason why.  Some of them more convoluted than others.  I ran across this video which explains it better than anything else I've seen in about two minutes.  Check it out.

How much did you pay for gas last?