Where does the money go?

This should be included with every tax filing.

The Pew Research Center has a handy chart of where your federal dollars go. This should be included with every tax filing, but until that day, there's Pew.

Note the "Other" category. There's a lot of things in there that tend to be more visible in an average day. Retired general Stanley McChrystal talks about this in a New York Times Op-Ed, "Save PBS. It Makes Us Safer."