GREY'S ANATOMY - "Stand By Me" - Several of Dave's friends, all of whom he met online, show up early to support him as he gets his face transplant, on "Grey's Anatomy," THURSDAY, MARCH 19 (9:00-10:02 p.m., ET) on the ABC Television Network. (ABC/CRAIG SJODIN) CANDACE BROWN, MICHAEL MERTON, GRETA SESHETA, LARRY SULLIVAN