What will be John McCain's greateast challenge in his race for the presidency? His many and varied unethical relationships? Or the fact that he looks like a terrible monster on high-definition TV? Slate's Timothy Noah argues the latter. No one cares about ethics, but many people are buying fancy new flat-screens. And John McCain, who looks grandfatherly and dignified on, like, a YouTube box, looks like a mythological monster in crisp HD. Seriously! Above, a screenshot of McCain in regular definition. After the jump, the clip that's taken from in glorious HD.

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