The Fed move was a BIG TIME game changer (we are now playing in the big leagues)

Yesterday's message was about much more than just the $1.2 trillion of new spending by the US over the next 6 months (or so). Rather, the more important message is that the US (Fed) is essentially saying (by their actions yesterday) that they are willing to do anything (and print a limitless supply of new money) in order to prevent the Great Depression, Part 2 (especially since nothing else has worked thus far - they threw in the towel). Bernanke might also be seeing data showing severe trouble around the corner, hence the immediate drastic actions. It virtually guarantees that some form of severe inflation will materialize at some point down the road (once prices have been reflated).

Bernanke is a schooler on both the great depression and the 20 year Japanese deflation. He knows that he needs to reflate the economy asap otherwise there will be serious consequences. He has selected to embrace the lesser of 2 evils - inflation. He will now print as much money as required. "Helicopter Ben" might even do the dollar drops from a helicopter, as he mentioned (to expressed the firmness of strategy) in his speeches in the years prior to becoming the US Fed.