When ABC's enduring medical drama "Grey's Anatomy" made its debut in March 2005, Netflix was still a DVD-by-mail company. There were plenty of pagers but not an iPhone in sight when viewers met Meredith Grey and the show's first set of surgical interns. This week, "Grey's" finishes its 20th season with apparently no end in sight for the crew at Grey Sloan Memorial Hospital. Star Ellen Pompeo .