No, he made it worse. In January 2009, we were 2 years of pain from a strong recovery. Instead, we got a stimulus where we borrowed money from the Chinese to give to the unions, and tens of billions spent to make energy more expensive (windmills). Now, we are 4 years of pain from a good recovery.
Bevo Incognito, your misapplication of the S&P quote (they were obviously talking about their assessment of the tax rate situation, and you posted as if it was the reason for the downgrade, rather than the deficit total) was one of the worst pieces of intentional politicization of a truly serious issue I have seen. It's like scoring points for your side is more important than solving the nation's problems.
I didn't vote for Obama, and avoided posting critical pieces about him for most of his first year. Honestly, I wish he were a success, because that would be good for America. I didn't like Clinton, either, but I would happily take a second helping of the 1990s. By the time the stimulus was rammed through it was clear we're not getting that.
A lot of people post about Obama's economic policies like they're a good idea. I don't know why. For the life of me, I can't think of any examples where Keynesian spending stimuli have actually pulled a nation out of a recession. Obama's policies remind me of the story that ends..."Yeah, it looks pretty good in the shower, but to be honest with you, I'd trade it for one that worked."