Jennifer Aniston sat for three segments last night on The Late Show, most of which, little shock, was devoted to her private life — awkward if pleasant non-talk about holiday plans, tabloid/cultural scrutiny, current boyfriend John Mayer, and of course that recent nude photo shoot for GQ. The obviously planned capper to all this — Aniston giving David Letterman the very necktie she sports on the cover, sans clothing — was funny, but dragged on a bit too long, with Letterman swapping out ties and Aniston undercutting the pinch of the moment by repeatedly commenting on how “great” it was. For those wondering, Aniston did also briefly mention matriculating at Green Meadow Waldorf, the New York performing arts school made famous by Fame, though she said there weren’t legwarmer-clad impromptu dance-offs, alas.