This week: ‘American Idol’ announces Top 20; ‘Survivor’ goes to Redemption Island; ‘America’s Next Top Model’ returns

Judge Steven Tyler helps narrow the "American Idol" field this week. Photo credit: Tony Duran/Fox
It’s a big week in reality television. Just consider:
***”American Idol” delivers four hours this week. The contestants sing Beatles songs at 8 p.m. Wednesd

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