I thought this was a pretty cool idea, though I can't vouch for its accuracy.

Click hyper linked text in the quote below for an enlargeable version.

"Death and Taxes" is a large representational graph and poster of the federal budget. It contains over 500 programs and departments and almost every program that receives over 200 million dollars annually. The data is straight from the president's 2011 budget request and will be debated, amended, and approved by Congress to begin the fiscal year. All of the item circles are proportional in size to their funding levels for visual comparison and the percentage change from both 2010 and 2001 is included so you can spot trends.