Keira Knightley dropped by the Late Show last night in the midst of the host's near Network-worthy televised meltdown about our doomed planet. To her credit, she managed to evade all the dark prophesying, and even remained chipper when Letterman forced her to address the one topic that follows her more tenaciously than a swarthy French Riviera paparazzo on a Vespa: her body. Whether she's being accused of being a fanorexic thinspiration, or suing over those accusations, or being entered by her own studio into a Wet Nightie Contest, or fighting off their one-sheet breast-enhancement attempts, it seems no body has endured more scrutiny than hers. Can you blame her for not wanting to squat on cue? [Late Show]