We asked in May: “Which producer for a dorky cable anchor has been complaining to colleagues that she’s tired of his notoriously nasty behavior?” The answer came Monday when MSNBC announced that Izzy Povich, executive producer of “Countdown with Keith Olbermann” since 2004, had been named senior executive producer of Lawrence O’Donnell‘s program, which debuts this fall at 10 p.m. Izzy, the daughter-in-law of Maury Povich and a mother of two, had no comment.