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 6 comments Comments In this Jan. 19, 2010, file photo, Robert "Joe" Halderman, leaves Manhattan criminal court in New York. (AP Photo/Louis Lanzano, file) (Newser) – 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.