Crime / David Letterman Letterman Blackmailer Up for Emmy Ex-producer nominated for Amanda Knox 48 Hours segment By Nick McMaster, Newser Staff Posted Jul 15, 2010 5:20 PM CDT Copied In this Jan. 19, 2010, file photo, Robert "Joe" Halderman, leaves Manhattan criminal court in New York. (AP Photo/Louis Lanzano, file) Robert Halderman, the man who attempted to blackmail David Letterman, learned today that he's been nominated for an Emmy, notes Mediaite. Halderman was the producer of "American Girl, Italian Nightmare," a segment on CBS' 48 Hours Mystery about the murder trial of Amanda Knox. The segment is nominated for Outstanding Continuing Coverage of a News Story in a News Magazine. Halderman is serving a 6-month prison term. (More David Letterman stories.) Report an error