Effects of Letterman blackmail case hard to judge

FILE - In this Jan. 17, 2008 file photo, television talk show host David Letterman walks out of The Ed Sullivan Theater during a taping of "The Late Show with David Letterman", in New York. Photo/Evan Agostini, file) (AP)

May 3, 2010 11:19:20 AM PDT
Former CBS producer Robert "Joe" Halderman is about to go to jail for trying to blackmail David Letterman.