With one in four families fatherless these days, this two-hour special takes the position that it takes a real man to be a ``True Dad.'' If you think bringing home the bacon and tossing the ball around is enough, think again. In the 21st century, real men change diapers, help with homework and nurture their kids. With the exception of Nascar driver Kerry Earnhardt, the six subjects profiled in this two-hour special are not well known. Shorter and less substantive interviews with celebrity dads such as actor Alec Baldwin, New York Yankee catcher Jorge Posada and ``Today'' show host Matt...