You speak of a "meter [that] has barely moved," yet the economic consensus is that were it not for the stimulus, unemployment would be even worse than it is now.
Well since it's mostly the people who spent the money as well as the people who advised us to spend the money who are telling us this - are you surprised? When the press tends to not ask the masterminds of that spending uncomfortable questions, then why should we be confident in our knowledge based upon what they have told us so far?
Shouldn't we be instead be giving more credence to those who said that the stimulus wouldn't accomplish what the Administration was selling? Since those contrarians were right?
You say that it would have been "worse", but how much worse? The justification for adding such a huge amount to our debt was the big return. If the stimulus got us to 7.7% unemployment right now, but without it we'd be at 7.9%... then maybe we should have not incurred so much more debt?