This time, it's Keith Turner, president of ad sales. Turner, who had been with the network for nearly 20 years, was apparently tight with television group president Randy Falco, who left to head AOL. Needless to say, being head of ad sales at the low-rated network was probably not the most comfortable spot to have. NBC lost $1 billion in 2005 and isn't exactly wowing anyone this season. Sources told THR that Turner's successor might come from GE, NBC's parent company. The day after Falco's resignation, David Zaslav, head of the cable/new media business, resigned to become CEO of Discovery Communications. Meanwhile, there's growing talk that NBC Universal Chairman Bob Wright will announce his retirement early next year (contrary to recent reports in which Wright showed little interest in stepping down). NBC head Jeff Zucker seems to have nailed Wright's job.Ad Age also has the story.