Ellen Pompeo Clarifies Her Comments About 'Grey's Anatomy's 'Toxic' Set

GREY'S ANATOMY - "We Didn't Start the Fire" - When Jackson throws a party to celebrate Catherine's surgery and those who worked to save her, literally nothing goes as planned. Meanwhile, Helen pays Alex and Jo a surprise visit on a record-breaking episode of "Grey's Anatomy," THURSDAY, FEB. 28 (8:00-9:01 p.m. EST), on The ABC Television Network. (ABC/Eric McCandless) ELLEN POMPEO