That devil horse
Will Ferrell as the president in a funny, over-the-top SNL-style, anti-Bush ad (via Miguel de Icaza).
On a more serious political note, the much-linked Electoral Vote Predictor is probably a better way to track the changes in the political fortunes of Bush and Kerry than national polls. The Electoral College Graph shows (some) important political events to help you guess at what might have contributed to poll swings.