Why NBC's not sweating Leno's falling ratings

A new network TV show that sees its ratings tumble after its debut usually meets with a swift and unforgiving fate. But don't expect that to be the case for The Jay Leno Show, NBC's prime time experiment with late-night comedy.

Thanks to a $10 million promotional campaign, Leno premiered on Sept. 14 in front of more than 18 million viewers. But by its second week, the show's audience had contracted to the 6 million-to-7 million range.