Jason Cawley, whom I know through Wolfram Research, has created a neat visualization of the various effects of interest rate cuts by the Federal Reserve. I have discussed various financial news with Jason in the past, and he has written me long interesting letter. So I'm particularly pleased to see his analysis of this one on the Wolfram corporate blog.
Here's the link to his detailed blog post, "Analyzing the Fed Rate Cut in Mathematica," and here's a link to his interactive visualizations on the Wolfram Demonstrations site, entitled Macroeconomic Effects of Interest Rate Cuts.
UPDATE: Congrats to Jason, who made the Wall Street Journal blog!