02/23/2009 05:12 am ET Updated May 25, 2011

Katie Couric In Prime Time: CBS To Experiment With 8PM

On Wednesday at 8 p.m., CBS will pre-empt "The New Adventures of Old Christine," which stars Julia Louis-Dreyfus, to put on a program featuring a star arguably even bigger: a special edition of "The CBS Evening News With Katie Couric."

As near as CBS researchers have been able to determine, the one-night experiment will be a first, Sean McManus, the president of CBS News and Sports, said in an interview on Thursday. While broadcast news anchors like Ms. Couric periodically break into entertainment programming with news bulletins -- or lead specials like those earlier this week on the presidential inauguration -- no broadcast network has sought to put on an updated version of its dinner-hour network newscast in prime time, as CBS will do on Wednesday.

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