The Best Episodes of Late Show with David Letterman Season 12

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Dave points out that CBS is airng stock footage of a guy wresting an ostrich to compete with NBC's Olympic coverage; director Chris Kentis promotes Open Water; ""Still Standing"" star Renee Olstead performs a scorching rendition of ""Is You Is or Is You Ain't My Baby.""

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Dave has difficulty explaining to Paul what exactly animal photographer Sam Easterson does; Dave shows another out-of-focus clip from the Olympics; Denis Leary promotes the FX hit drama ""Rescue Me.""

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""CBS Mailbag"" features Dave getting friendly with U.S. Olympic volleyball stars Kerri Walsh & Misty May (bogus), Alan Kalter's ""You're Busted"" at Ranch 1, and New Jersey going ""Gay Crazy;"" gold medalist Paul Hamm visits.

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A man from Pennsylvania turns himself into a human jack o'lantern on ""Audience Show & Tell;"" ten U.S. Olympians present the Top Ten; political writer Maureen Dowd makes several alarming comments on the presidential election.

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Osama bin Laden announces that he wants to replace Craig Kilborn as host of the Late Late Show; Dave celebrates 11 years at CBS with a timeline; Biff reports from the Republican National Convention, with a goal to hug as many ""Republican Babes"" as possible.

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Jane Pauley promotes her new book, talk show, and bipolar disorder.

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Dave brags about working on Labor Day; like it does every year, a runaway taxi ruins the staff Labor Day barbecue (and runs over Alan); three National Hollerin' Champions do their thing; Neve Campbell; Keane performs ""Somewhere Only We Know.""

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At Hello Deli: Rupert selects a contestant to play the ""Late Show Heart Bypass Scramble;"" Regis promotes his new standards CD; Alan recaps his summer, with the usual results; Hoobastank performs ""Same Direction.""

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""CBS Mailbag"" introduces Rupert's new ""girlfriend,"" answers the question, ""Does Dave ever sing?"" and features Alan's message to Hillary Clinton; Martin Short; ""Late Show Back to School Tips;"" Alan Jackson sings.

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Biff spends the day at New York-Presbyterian Hospital with Dr. Lou Arrone; an educational segment with Alan and an animated rodent goes awry; Ray Romano talks about the final season of ""Everybody Loves Raymond;"" Avril Lavigne performs ""My Happy Ending.""

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Dave and Drew Barrymore discuss their long-dormant drinking problems; amputee Aron Ralston returns to the show to promote his new book.

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Dave comments on the CBS News scandal; John Kerry performs the Top Ten and gets grilled by Dave; Green Day performs ""American Idiot.""

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Stand-ins for Dave and Dr. Phil stand in the gallows; in honor of a recent stunt on Oprah, everyone in the audience gets an automobile air freshener; Alan unintentionally admits that he's sexual dysfunctional.

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Nobel prize winner Professor Robert A. Mundell reads aloud from Paris Hilton's book; Kelly Ripa; poker champion Annie Duke; Elvis Costello & the Imposters perform.

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As it does every season, Alan's hair changes colors; Dave comments on Conan O'Brien's promotion to hosting The Tonight Show in 2009, then openly asks if he can go back to NBC to host Late Night; a Kodomo Dragon (courtesy of Jack Hanna) startles Dave.

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Dave mentions Paul's line of handbags again, while John Goodman promotes ""Father of the Pride"" and ""Center of the Universe.""

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Live via satellite, Rupert plays bingo; Dave shows a photo of Harry shaking hands with one of the Stangel brothers; Tony ruins the ending of another movie En Espanol, then goes off on one of his trademark rants.

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