Friday Primetime Results:

· "Dateline NBC" (1.1/4 in 18-49, 6.1 million viewers overall from 8-9 p.m. ET) tied for #2 in the slot among ABC, CBS, NBC and Fox in adults 18-49, was #2 outright among those nets in total viewers and adults 25-54 and tied for #1 in men 18-34 (with a 0.7 rating) and men 25-54 (1.5). "Dateline" grew from half-hour to half-hour in every key measure, with gains of +9% in adults 18-49 (to a 1.2 rating from a 1.1), +29% in adults 18-34 (0.9 vs. 0.7) and +20% in adults 25-54 (1.8 vs. 1.5).

· "Grimm" (1.2/4 in 18-49, 4.8 million viewers overall from 9-11 p.m. ET) ranked #2 in the two-hour time period among the Big 4 in adults, men and women 18-34. "Grimn" tied as the #1 scripted show of the night on the Big 4 in adults 18-49.

· L+3 Time-Shifting: The prior week's "Grimm" earned the show's biggest time-shifting lift ever going from "live plus same day" results to "live plus three day," growing by 1.15 rating points from a 1.58 to a 2.73. In L+3 rating, "Grimm" ranked as the #1 show of that night on ABC, CBS, NBC and Fox. On a percentage basis, it's a gain of 73% in 18-49 rating in three days. In total viewers, the Dec. 6 "Grimm" set a series record for biggest L+3 overall audience, growing to 9.008 million viewers, which tops the 8.757million in L+3 for the show's season premiere Oct. 25. That Dec. 6 telecast delivered 6.323 million viewers in "live plus same day" and then grew by 2.685 million or 42% in L+3.

In Late-Night Metered Markets Friday night:

· In Nielsen's 56 metered markets, household results were: "The Tonight Show with Jay Leno," 2.6/6; CBS's "Late Show with David Letterman," 2.8/7; and ABC's "Jimmy Kimmel Live," 2.1/5.

· In the 25 markets with Local People Meters, adult 18-49 results were: "The Tonight Show with Jay Leno," 0.8/4; "Late Show," 0.5/2; and "Jimmy Kimmel Live," 0.8/4.

· From 12:35-1:05 a.m. ET, ABC's "Nightline" averaged a 1.3/4 in metered-market households with an encore and a 0.5/3 in 18-49 in the Local People Meters.

· From 12:35-1:35 a.m. ET, "Late Night with Jimmy Fallon" (1.6/5 in metered-market households) beat CBS's "Late Late Show with Craig Ferguson" (1.4/4). In the 25 markets with Local People Meters, "Late Night" (0.7/4 in 18-49) topped "Late Late Show" (0.3/2).

· At 1:35 a.m., "Last Call with Carson Daly" averaged a 0.9/3 in metered-market households with an encore and a 0.4/3 in adults 18-49 in the 25 markets with local people meters.

NOTE: All ratings are "live plus same day" from Nielsen Media Research unless otherwise indicated.