It's very easy to lose sight of the queen of spades in the game of three card monte that constitutes our financial and commodity markets. A mere six months ago the calls for $200 dollar a barrel oil were deafening, now they are drowned out completely by predictions for $15 or $20 dollar a barrel oil. Who to believe? As a place to start (and possibly finish) answering that question, I would like to point you in the direction of a slide show courtesy of oil industry expert Matthew Simmons. I hope you find it helpful.
P.S. Putting aside the message contained in the slide show, remember that, strictly speaking, the U.S. dollar is worthless, but oil is not.