'Idol' Tweaks Its Formula to Stay Fresh for Season 8

How long can the dominant but aging "American Idol" keep hitting the high notes? Television's top-rated series opens Season 8 Tuesday (Fox, 8 ET/PT) with its hugely popular auditions while trying to freshen a format now well into the TV version of middle age. Although "Idol" is expected to easily maintain its No. 1 status, last season's ratings drop was its biggest yet, Season 7 champ David Cook hasn't ignited the charts, and some wonder how long a devoted fan base will remain loyal in a...Full Story
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