The Art Of the Steal (2009) by Don Argott

Available on Instant Netflix!

This was absolutely enthralling. I highly recommend that you watch this documentary. It's an hour and forty minutes of the story of Dr. Barnes and his wonderful art collection of post impressionist masterpieces. There are so many different questions that arise and that you should ask yourself about the art world. Watch it and post your comments in the Forum tab. I'll start the first question and YOU jump in with opinions and questions of your own :) 
EDIT: Even if you have not watched The Art of the Steal or do not have Netflix. The questions are opinionated and do not require you to view the film.