Larry Dighera wrote:
On Tue, 23 Oct 2007 19:15:21 -0400, wwwzzzyyyuuu
wrote in :

The intellectually handicapped have been
reproducing at a substantially greater rate than those with
a fully functional brain.

http://www.imdb.com/title/tt0387808/
Idiocracy (2006)
Private Joe Bauers, the definition of "average American", is
selected by the Pentagon to be the guinea pig for a top-secret
hibernation program. Forgotten, he awakes 500 years in the future.
He discovers a society so incredibly dumbed-down that he's easily
the most intelligent person alive. more

That sounds like the plotline for C. M. Kornbluth's "The Marching Morons,"
written in 1951. I read that when I was a teenager a zillion years ago when
I found "The Science Fiction Hall of Fame" volumes (great collection, btw).
Anyway, Wikipedia has an entry for Kornbluth's story:

http://en.wikipedia.org/wiki/The_Marching_Morons

As it turns out though, I believe regression to the mean may come into
play.