GREY'S ANATOMY - &quot;Before and After&quot; - Addison lays a smooch (platonic, we think), on Derek after he saved her brother, Archer's life, on &quot;Grey's Anatomy,&quot; THURSDAY, FEBRUARY 12 (9:00-10:02 p.m., ET) on the ABC Television Network. (ABC/RICHARD CARTWRIGHT) KATE WALSH, PATRICK DEMPSEY
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