Even before the "Porkulous Spending Bill" was was passed, there were economists saying that it was a mistake. Many believed that US actions helped to prolong and exacerbate the Great Depression. Other countries are recovering from this recession, but the ones that went in for big deficit spending are lagging behind.
An interesting comparison should be made between the recovery from the Great Depression, in Britain and France during the 1930s, and the United States during the 1930s.
Both Britain and France emerged from the devastation a great deal sooner than the United States. Remember that 1937 was one of the worst years in the United States, and that unemployment was consistently high until 1940-1941, making the Great Depression a ten-year+ phenomenon here.
The difference was that Britain and France did practically nothing, other than increasing the weekly unemployment sixpence or a few centimes, allowing their economies to correct themselves. And the United States embarked upon all sorts of coerced "corrective" measures for the problem here.
I still think that if all had been left alone, we would be well on our way to recovery.