It is maddeningly hectic just now but I came across this and learned a lot from it about the banking "crisis".
The Crisis of Credit Visualized from Jonathan Jarvis on Vimeo.
Being a financial idiot, it answered many questions I had about just how this mess came about. In short, they tried to game the system and, as with all dishonest schemes, it finally came back to bite them.
Still, a very interesting and nicely simplified view of things...