This is an interesting video that walks you through the "root causes" of the financial crisis. I put "root causes" in quotes, because it doesn't really get to the tap root of the problem, which is centralized banking and too much government manipulation of markets (well, it covers that, but doesn't question the whole premise of government involvement in markets to begin with).
Also, it doesn't convince me to vote for McCain, who is scary power hungry, and Palin, who is scary stupid. But it casts further doubt on Obama's place in all of this.