The Ticker: (Late Edition): Olbermann, Smith, Jones…

By Chris Ariens 

> MSNBC’s Keith Olbermann will guest on Late Show with David Letterman tonight.

> FNC’s Shepard Smith will be in New Orleans tomorrow. He’ll tour the lower 9th ward and get a one-on-one with Sen. John McCain.

> Former truTV host/The View co-host/NBC News correspondent/lawyer Star Jones has filed for divorce from her husband of three years, Al Reynolds.