Comcast dropped a bombshell Sunday, announcing that NBCUniversal CEO Jeff Shell is leaving the company, effective immediately. The “mutual” decision comes after an investigation led by outside counsel into a complaint on inappropriate conduct by Shell. “Today is my last day as CEO of NBCUniversal,” Shell said in a statement. “I had an inappropriate relationship with a woman in the company, which I deeply regret,” said Shell, who is married. “I’m truly sorry I let my Comcast and NBCUniversal colleagues down, they are the most talented people in the business and the opportunity to work with them the last 10...