@sully-
Not if we just spent money. But if we had spent more money properly, we'd be in a better position. The February 2009 stimulus package was somewhere between 750-800 billion, depending upon what you think of the real effect of the AMT cuts. Right around a third of this was tax cuts, which are not especially stimulatory, but were a practical necessity in order to prevent the bill from being filibustered in the Senate. So, realistically, we're talking about 500 or so billion in spending. The initial stimulus package requested was in the neighborhood of 1.2-1.4 trillion, with less of a tax cut as an integral part of the package. Call spending somewhere around 1 trillion. Given the demand crisis that's at the heart of this recession, and an extra 500 billion dumped into the economy would likely make a pretty substantial difference.
All of this ignores, however, the real disaster to grow out of the past 30 odd years of deregulation: the fact that in lieu of building a new energy grid, or repairing en masse American infrastructure, we've actually just spent the time funneling wealth at the richest people in the world, and have reached the point where we're selling off pieces of our infrastructure to make the world's superrich superricher.