Late night TV hosts through the years

Posted: 1:39 PM EDT Apr 10, 2014   Updated: 11:22 AM EDT May 20, 2015

As David Letterman signs off from the "Late Show" for the last time, take a look back at memorable late night hosts through the years.

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NBC Television

Steve Allen -- "Tonight Starring Steve Allen" (September 1954-January 1957, NBC)


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