In great detail, Rolling Stone discusses whether, in fact, George W. Bush is the worst president in history.
Of course, lots of us agree or disagree with that statement, for a variety of reasons. This article goes into a detailed analysis of Bush’s actions, and the result is… holy crap. When you see it all written out in one place like that, it’s kind of overwhelming. An excerpt:

“Armed with legal findings by his attorney general (and personal lawyer) Alberto Gonzales, the Bush White House has declared that the president’s powers as commander in chief in wartime are limitless. No previous wartime president has come close to making so grandiose a claim. More specifically, this administration has asserted that the president is perfectly free to violate federal laws on such matters as domestic surveillance and the torture of detainees. When Congress has passed legislation to limit those assertions, Bush has resorted to issuing constitutionally dubious ‘signing statements,’ which declare, by fiat, how he will interpret and execute the law in question, even when that interpretation flagrantly violates the will of Congress. Earlier presidents, including Jackson, raised hackles by offering their own view of the Constitution in order to justify vetoing congressional acts. Bush doesn’t bother with that: He signs the legislation (eliminating any risk that Congress will overturn a veto), and then governs how he pleases — using the signing statements as if they were line-item vetoes. In those instances when Bush’s violations of federal law have come to light, as over domestic surveillance, the White House has devised a novel solution: Stonewall any investigation into the violations and bid a compliant Congress simply to rewrite the laws.”