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You might think that Bridget Lancaster and Jack Bishop — two of the culinary talents behind the public television shows America's Test Kitchen and Cook's Country — would have their cooking techniques pretty much figured out. Think again.

For the new Cook's illustrated book The Science of Good Cooking, Bishop and Lancaster tested principles they assumed were true — and as Bishop tells Fresh Air's Terry Gross, "Things that we thought were actually accurate turned out to be, perhaps, more complex."

Whenever Tyler Perry is in front of the camera, he's usually behind it as well. A screenwriter, director, producer and star, Perry grew up poor in New Orleans, but he has become a movie phenomenon — he was described in the New Yorker as the most financially successful black man the American film industry has ever known.

Roxy Music's eight studio albums have just been collected in one box set, titled The Complete Studio Recordings 1972-1982.

Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors, and musicians, and often includes excerpts from live in-studio concerts. This week: