Change Reserve Requirement?

I've been hearing that Ben Bernanke is using "every available tool" to spur the economy. Dropping interest rates to 0 and lending money freely have been drastic moves, but he is still not using every tool at his disposal.

The Fed has one tool that I haven't heard anybody talking about. The Fed sets the reserve requirement for banks. This power is considered by economists to be the "sledge hammer" of their powers, having a more dramatic impact on the economy than setting rates or making loans.

My question is, do we not need a "sledge hammer" right now? The use of this third power would directly impact the credit issues this country is experiencing. It would have a positive impact on banks that cannot loan because they have capital constraints.

While I'm not advocating lowering the reserve requirement forever, it is available to Ben Bernanke to use to try to get our country through this crisis.