I just finished Barton Gellman's Angler: The Cheney Vice Presidency, and I thought it was unusually good. Gellman offers a very interesting and readable picture of how Vice President Cheney operated over the course of the Bush Administration -- how Cheney assembled power, and how he used it. Gellman's own views are not hard to guess (he is no fan of Cheney's positions), and much of the book covers territory covered to varying degrees elsewhere. But I found the book well researched and I thought it added a lot of new stuff, too.