I mentioned below that Obama is setting the stage for his jobs speech by lowering expectations and burying substantive analysis. I forgot to mention the third leg of his preparation: blaming others.
Obama is launching a series of lawsuits against big banks for their role in causing the recession. Whether these banks misrepresented the quality of bundled mortgage securities is a fair question, but Obama's purpose is certainly to frame a scapegoat toward which he can attempt to deflect criticism. Watch for it in his speech. It's not his unprecedented spending, lack of economic proficiency or anti-business regulations which are to blame for the continuing recession - it's the fault of the big, bad banks. (See if he is also able to subtly and indirectly blame the whole thing on Bush.)
Obama has set the stage for a truly meritless campaign speech.