​What do Oprah, the TV show 20/20, Houston crime victim advocate Andy Kahan and Houston lawyer Kim Ogg have in common? They're all involved in the sordid tale of Philippe Padieu, a Dallas-area man who is in prison for knowingly having unprotected sex with dozens of women without telling them he was HIV positive.In May, a Collin County jury found Padieu, 53, of Frisco guilty of six counts of aggravated assault with a deadly weapon. Padieu was sentenced to 45 years in prison. The case is being