A couple of weeks ago, super-lawyer Alan Gura introduced me (through Facebook no less) to Gene Healy, a senior editor at the Cato Institute, a libertarian think-tank based in Washington.
Gene recently wrote a book -- his first -- on the presidency titled The Cult of the Presidency. He was kind enough to send me a copy, and I thoroughly enjoyed it (and not just because I'm a presidency geek).
His basic thesis: the power of the presidency has stretched beyond the founders original intent, and that this "imperial presidency" represents a threat to our liberty. I'm generally sympathetic to his point of view, particularly after the invasion of Iraq, though lately I seem to be questioning my libertarian tendencies in light of all the bailouts.
With this book, Gene has accomplished the rare feat of making academic history (it's copiously researched and footnoted) read like a narrative. It's a great read -- give it a looksie if you have a little time.