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In the premiere episode of Bravo's "Top Chef," the cast will be thrown straight into the demanding kitchen of famed San Francisco restaurant Fleur de Lys for the quickfire challenge where Guest judge Hubert Keller (famed chef and partner of Fleur de Lys) joins host Katie Lee Joel and judges Tom Colicchio and Gail Simmons to help to make the decision on who must "pack up their knives" first.