Blonde, green-eyed child actor David Gallagher landed his first job at 18 months old and went on to make his film debut at the age of eight in "Look Who's Talking Now" (1993), but would reach his widest audience as Simon Camden, one of the five (later seven) children of a progressive minister, on the popular family drama "7th Heaven" (The WB, 1996- ). One of the network's highest rated series, the heartfelt "7th Heaven" won the actor many young fans and an enviable visibility....