The New York Times has put up an interactive graphic of Obama's proposed 2011 budget. They did this last year as well (and I believe I linked to it here as well). Each part of the budget is to scale so you can see how much is spent on different programs and can play the "I can cut this budget easily" game. Here is a snapshot of this year's budget.
I know you can't read everything here..the interactive graphic lets you zoom in to see what those small squares are. The colors indicated whether the funding has increased or decreased from last year.
Spending is only half the issue. I would love to see an interactive graphic that shows where the government revenue comes from.