GREY'S ANATOMY - "Push" - A patient who needs an extremely difficult surgery comes to Seattle Grace, and it's Richard and Owen who vie for the opportunity to tackle it. But the decision lies in the hands of Derek, who deems that Owen should take on the surgery, leaving Richard bitter. Meanwhile, Bailey deals with her own personal struggles when she nervously prepares for another date with Ben, on "Grey's Anatomy," THURSDAY, MARCH 11 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/ADAM LARKEY) GEOFFREY BLAKE, MOON ZAPPA, CHYLER LEIGH, JESSICA CAPSHAW, AIDAN WALTER