I don't normally publish "go read that" pieces, but two articles are floating around the infosphere that everyone ought to be aware of.
First is a piece by Judy Bachrach in Vanity Fair. "Washington Babylon" chronicles the shenanigans of Randy "Duke" Cunningham, the Vietnam era Navy fighter ace who abused his position on the House defense appropriations committee to make himself rich and subsequently went to prison for it.
Second is a story in The New Yorker by Jane Mayer. Mayer has been tracking the efforts of all the President's lawyers to subvert the constitution for quite some time. This time, she goes into detail about the role of Dick Cheney aide David Addington in subverting division of power in a so-called republic unseen since the days of Julius Caesar.