Dave welcomes actress Debra Messing, actor Josh Hutcherson, and musical guests Oberhofer. The "Smash" star discovers a lot of fake Debra Messings on Twitter.

Dave welcomes actor Martin Short and musical guests The Ting Tings. Martin upsets a famous female broadcaster and her husband (but it's not Connie Chung and Maury Povich).

Comic Kathy Griffin; from "Zero Dark Thirty", actor Chris Pratt; Big Boi performs.

Senator John Edwards, Diablo Cody, and Josh Ritter are the scheduled guests.

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Stephen Colbert and Kristen Stewart are the scheduled guests.

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A very pregnant Demi Moore is given the honor of throwing the first pencil through the backdrop windows of the Late Show.

Tom Hanks interrupts the monologue because he and Dave are dressed alike; throughout the night, spelling bee champ Edmund Gillette stands next to Rob's desk and spells words; during Mailbag, Alan Kalter reacts badly to a letter asking if he's a freak by visiting the letter-writer (Jay Johnson) and punching in his face; Tom gets a new suit.

Dave shows a tape of stunt biker/scheduled guest Travis Pastrana's mishap that afternoon, and the injured daredevil later hobbles onstage. By the end of the show, the Hi-Ho Girls are helping Travis repair his bike.

Dave plays "Know Your Current Events" with the audience. Later, Paul Newman talks about auto racing while promoting "Road to Perdition."

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Tonights guests include Rachel Weisz, David Rakoff and Morningwood.

Dave's beard gets a key to the city, courtesy of Mayor Bloomberg; a wayward WGA picketer wanders around in the backdrop; Hal Gurnee's latest Network Time Killer is a "balloon drummer"; Ellen Page plugs Juno; Roger Bart, Sutton Foster, and Chris Fitzgerald perform a song from the musical "Young Frankenstein."

Tom Hanks and Mike Huckabee are the scheduled guests.

Morgan Freeman and Chuck Prophet are the scheduled guests.

An audience member claims to know Dave's ex-wife, who apparently now lives in Florida; the show is again interrupted by radio transmissions from Lt. Len Easton of the California Highway Patrol; Mike McIntee and Harold Larkin play "Can Two Guys and Their Dead Friend In An Office Chair Hail a Cab?"; Don Rickles plugs his DVD Mr. Warmth and throws a few zingers at Dave and fellow guest Denzel Washington.

"AMPTP President Nick Counter" and "Writers Guild Executive Director David Young" call a truce... and make out; in tonight's remote, Andy Kindler visits a toy convention; the latest Kid Scientist experiments from Naperville, IL include gravity-defying water and a crudely-built hovercraft; Kenna (featuring N.E.R.D.) performed "Say Goodbye to Love."