The line to leave NBCU because of the Comcast-GE-NBCU merger forms here. Granted that a lot of executives either have their resumes out or are being head-hunted for key jobs. Latest is Lauren Zalaznick, the President of NBC Universal’s Women and Lifestyle Entertainment Networks who oversees Bravo and Oxygen. Sources tell me she’s in advanced talks to take Brian Graden’s big job as MTV President of Entertainment running MTV and VH1. It’s been vacant since June. As one of my insiders explains, “Word is that post-merger there’ll be no upward mobility for her there.” Zalaznick isn’t just tops in women’s TV but should fit in just swell programming MTV swill since she’s been responsible for such trashy shows like Real Housewives, Bad Girls, and Tori & Dean .