Stars Who Almost Played Other TV Roles — on Grey's Anatomy, NCIS, Lost, Gilmore Girls, Friends and Other Shows

Somewhere, there’s an alternate universe where Rob Lowe practiced medicine not on Code Black, but as Grey’s Anatomy‘s McDreamy. Where Katie Holmes played Orange Is the New Black‘s Piper Chapman. And where Game of Thrones‘ Iwan Rheon almost played Game of Thrones‘… Jon Snow?! READ MORE & VIEW PHOTOS