can't pin this one on Les Moonves
. CBS's Late Show with David Letterman
has fallen farther behind NBC's Tonight Show with Jay Leno
in the ratings so far this season — despite the arrival of stronger lead-ins such as CSI: Miami
and Without A Trace
. For the week of Sept. 23-27, Tonight Show
averaged 5.9 million viewers compared to Late Show
's 4.1 million.