A Hard Day's Night

"A Hard Day's Night" is the pilot episode of the American television medical drama Grey's Anatomy, which first aired on March 27, 2005 on ABC. The episode introduces main characters and surgical interns Meredith Grey, Cristina Yang, Izzie Stevens, Alex Karev and George O'Malley, who come face to face with what their future holds as they enter the realm of surgery at Seattle Grace Hospital. Other main characters include Derek Shepherd, Miranda Bailey, Richard Webber and Preston Burke.