The reality is that at this point we really don't need additional stimuli, the Fed has acted aggressively and appropriately, and there have been sufficient other economic stimuli provided by the government. Too much more stimulus and the Fed could be faced with having to raise rates in the not too distant future.
The historical fact is that the average recession has lasted 11 months, with each one being slightly shorter than the previous recession. According to the govt. dept. that keeps "official" track of such things, the current recession actually began in March of 2001. Which means we are a good 8-9 months in to this current recession, ie. the light's at the end of the tunnel, if this indeed is going to fit the model of an "average" recession, which most people think will be the case. A quick look at the stock market confirms this as the stock market is actually a leading indicator, not a trailing indicator, and is generally about 6 months ahead of the actual economic state. (Note: yes, the market has sold off the last couple days, but only because it was overbought; technically there will always be ups and downs such as this, but the trend overall is now up.