05/05/2010 05:12 am ET | Updated May 25, 2011

'Dateline' To Help Fill NBC's Leno Gap

As NBC tries to patch together a new lineup for the 10 p.m. hour, it has called on "Dateline" to fill in the gap on Fridays by stretching the program to two hours, from 9 to 11 p.m., an expanded format that was originally slated to begin in May. That means the newsmagazine has 12 extra hours this spring.

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