50 years of "Doctor Who." - 50 years ago some very clever people invented “Doctor Who.” 50 years later we still love it. On the occasion of the show’s golden anniversary, here’s our unabashed lovefest for the BBC’s most clever invention. Four American fans discuss how we discovered the show, our favorite Doctors and stories, and the unique and welcoming culture of sci-fi fandom. Host Jason Snell with Erika Ensign, Chip Sudderth and Glenn Fleishman.