Where did my tax dollars go?

And now the winners of Google's "Data Viz Challenge"! The Grand Prize went to Anil Kandangath for the visualization above. Here's a description of the competition from the site:

"Every year, Americans fill out income tax forms and make a payment to the IRS. It’s an important civic duty, but it is also a lot of money. Where does it all go? Using data provided by WhatWePayFor.com, we challenged artists, coders, and the general public to create data visualizations that would make it easier for U.S. citizens to understand how the government spends our tax money."

Try out Anil's winning entry and the rest of the competition here:

Google Data Visualization Competition Winners