Letterman Beats Leno in All Measures

For this first time since Jay Leno's return to late night, David Letterman has beaten his NBC rival in all the major talk show measurements.

For the week ending Oct. 29 , CBS' Late Show topped The Tonight Show among viewers, adults 18-49 and adults 25-54.

Letterman averaged 3.8 million viewers compared to Leno's 3.6 million; 1.0 adult demo number compared to 0.9; 1.3 adults 25-54 rating vs. 1.2.

Among the later acts, Late Late Show With Craig Ferguson beat NBC's Late Night With Jimmy Fallon among viewers (1.8 million to 1.7) while Fallon trumped in the adult demo (0.5 vs. 0.6). ABC's Jimmy Kimmel Live had 1.8 million viewers and a 0.5 rating.

NBC points out that among adults 18-34, Leno is still tops, and that through the first six weeks of the season, Tonight is leading Late Show by a squeaky 3% margin in the adult demo.

RELATED: The Great Late-Night Poll