National Public Radio called a few days ago, asking my opinion on an interesting statistic:

NBC had just three shows among the Top 25 programs in ratings for viewers aged 18 to 49 -- one of advertisers' prime groups. Not one was in the top 10.

Indeed, a look at the list provided by TVBytheNumbers.com for the week ending March 14 revealed just one scripted show by NBC in the list -- The Office, at Number 13 -- with the newly-debuted Celebrity Apprentice at 23 and The Biggest Loser at 25.

Of course, this is the continuing fallout from the network's failed Jay Leno strategy. Though shows such as Parenthood and Law & Order: SVU have garnered bigger ratings than the canceled 10 p.m. Jay Leno Show, they still have no major hits in those hours.

Turns out, I wrote a story predicting this more than two weeks ago -- noting how the failure of the Leno gambit was just the latest turn in NBC's bigger problem, it's lack of a clear identity. While CBS is the home of cop dramas and traditional sitcoms and ABC offers female-friendly dramas such as Grey's Anatomy, NBC hasn't really found a profitable niche since the 1990s.

Unable to develop a new vision for the network after Must-See TV shows such as Friends and Frasier went away, NBC now is mostly rebuilding for the fall -- stuck putting on whatever they can get on the air until they can roll out a new focus for advertisers in May.

Click below to hear the interview.