Foo Fighters rocker Dave Grohl got personal with fans today, posting a short note on his Instagram page revealing that he had recently fathered a child, but not with his wife. "I've recently become the father of a new baby daughter, born outside of my marriage," he wrote. "I plan to be a loving and supportive parent to her." He went on to say that he still loves "my wife and children, and I am doing everything I can to regain their trust and earn their forgiveness." He did not reveal the...