Evan Agostini / Associated Press
In 1995, Oprah hired former psychologist Phil McGraw's consulting firm to help her navigate the Texas beef trial. After her victory, Oprah invited the straight-talking "Dr. Phil" on her show in 1998, effectively launching the mustachioed self-help mogul's television career. He soon became a weekly guest, appearing Tuesdays as a "relationship and life strategy expert" to offer advice on parenting, weight loss, financial planning and romance. In 2002, Dr. Phil graduated to his own show, produced by Winfrey's Harpo Studios.
Photo: Oprah helps shave Dr. Phil's trademark mustache during a live taping of "The Oprah Winfrey Show" on May 7, 2010 at Radio City Music Hall in New York.