3. Best Daddy Issues: In Lost‘s alternate universe, Dr. Shephard has a teenaged son, David, who is a piano prodigy. While Jack’s estrangement from David at first recalls his own difficulties with Christian or the tension between Michael and Walt, The Jack-Daddy overcomes his fathering failures simply by telling his son that he loves and is proud of him. (Next question: Who’s David’s mom?)
source : tv guide