Late Night Highlights: Letterman Blows Smoke at Katherine Heigl, Sigourney Weaver Recalls Meeting Bill Murray

Last night, Life As We Know It star Katherine Heigl tested "the PC police" by passing a special cigarette with David Letterman on The Late Show. Elsewhere, Sigourney Weaver remembered her first encounter with Bill Murray, Jon Stewart traded banter with Bill O'Reilly, and Stephen Colbert experimented with a new low-budget format.

4. Bill O'Reilly and Jon Stewart: Friends or Frenemies?

Stewart welcomed Fox News host Bill O'Reilly to The Daily Show to discuss why Glenn Beck won't invite Stewart to his show and why neither Fox host will attend Stewart and Colbert's joint rallies in Washington. Believe it or not, the segment was very pleasant.

The Daily Show With Jon Stewart	Mon - Thurs 11p / 10c
www.thedailyshow.com
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3. Passing the Smoke Stick

Last night on The Late Show, Katherine Heigl and David Letterman traded hits off of a mechanical cigarette.

2. How Bill Murray Picked Up Sigourney Weaver

On Jimmy Kimmel Live!, the You Again actress recalled the day she met her Ghostbusters love interest. She also shared a charming Woody Allen story that indirectly involved putting a hedgehog in a bad place.

1. Colbert Goes Low Budget

Stephen Colbert invited Christine O'Donnell onto his local chat show, The Delawert Report, which lucky audience members got a taste of last night.

The Colbert Report	Mon - Thurs 11:30pm / 10:30c
www.colbertnation.com
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