I agree that the crisis on wall street should provide a great avenue for Obama to attack. The emphasis should be on the corporate malfeasance that caused it, which was tacitly condoned by the Bush government, and which we are now paying for through government bailouts. Obama should definitely raise the Savings and Loan / Keating Five scandal - now's the time to do so effectively and aggressively.
Did any of you hear the This American Life story on how the housing crisis happened (which led to the downfall of Lehman Bros. and others)? The episode is called "The Giant Pool of Money." I highly recommend it: http://www.thislife.org/Radio_
The irresponsibility of the investment firms who caused the collapse is utterly stupefying and infuriating.