Over the past few years I have read several books and dozens of articles on the recent financial crisis. I just saw the film "Inside Job" which, while somewhat less technical than some of my reading, gets the facts straight about this disaster, and presents them in a compelling manner. It won this year's Academy Award for Best Documentary -- and well deserves the honor. (Ebert's review can be found here, many others, of course, are available; they all seem favorable.)
The film is dramatic, true, but it is completely non-fiction. All scenes are either live interviews or newsclips; assertions are all documented, and match up with what I've read in books and newspapers. It also shares the blame pretty widely: banks, professors, advisors, CEOs, and politicians of both parties, from the Reagan administration through the Obama adminstration.
Go see it if you haven't already: it's on DVD and I got it from Netflix. It's a small miracle that it was made and that it received the recognition it deserves.