Man, Economy, and State by Murray Rothbard
The Ludwig von Mises Institute lecture series on economics
That's not my weekend reading, by the way - that's the Big Fella's reading list (he turned 16 in January). And he's not actually reading the LMI lectures - he listens to them on his iPod when he's walking to and from school.
Looks like I've raised a libertarian. How'd that happen?