Tonight: Letterman v. O’Reilly.

Bill O’Reilly has taped an episode of CBS’s “Late Show With David Letterman” set to air tonight. During the show, Letterman “machine-guns him with insults,” prompting O’Reilly to say, “It isn’t so black and white, Dave – it isn’t, ‘We’re a bad country. Bush is an evil liar.’ That’s not true.” Letterman responds, “I didn’t say he was an evil liar. You’re putting words in my mouth, just the way you put artificial facts in your head!