Here's the idea: 

Bush needs to do what Truman did in 1948.  He needs to call a special 11-day session of Congress over the summer recess and force the Congress to come back to Washington (the recess is Aug.11-Sept.5th).  

Bush could then deliver a message where he asks Congress to do their jobs - legislate (!!), for example:

(1) address the energy/gas crisis (i.e, offshore drilling and/or nuclear); and/or

(2) pass a budget — they have yet to pass one appropriations bill this year because as Pelosi and Reid admitted — they are waiting for Obama to become president to do a budget, which btw — is simply irresponsible and wrong.

I believe that the Democrats would whine and not pass a thing.  Then Bush and McCain could hammer them for being a "do-nothing Congress."  Moreover, McCain has the experience legislating to show up Obama in the Senate during a special session — it's his turf and I think he could make Obama look foolish.

I believe it would work because (a) congressional approval is lower than the president's approval (by about 20 points); (b) Rasmussen's tracking poll shows that the Democratic advantage on the "generic ballot" has decreased in each of the last 5 weeks (people are tired of blaming Bush); and (c) Pelosi is not liked at all (people will readily transfer their angst about the government to her).