blankThe man charged with trying to extort $2 million from David Letterman in exchange for not peddling a screenplay based on the Late Show host's backstage affairs with staffers has offered up a new point of defense -- the alleged hush money Tiger Woods gave to reported mistress Rachel Uchitel. In court papers filed Tuesday, Robert Halderman's lawyer cited published reports that Woods paid an alleged mistress millions of dollars to stay silent. Attorney Gerald Shargel suggested that since the woman hasn't been charged with a crime, Halderman shouldn't be, either.