CBS' "Late Show with David Letterman" remained in first place last week as ABC's "Nightline" came in a close second. NBC's "Tonight Show" was in third by a gap of 1.42M viewers. This makes 17 weeks that "Nightline" has had more Total Viewers than Conan O'Brien's program (four weeks for the A25-54 demo).

The competition in the A18-49 has gotten very tight with all three programs tied in the rating (1.0).

The numbers for the week of October 12: