Thursday Results (ABC carried NFL football in San Francisco):

* At 8 p.m. ET, "30 Rock" delivered a 1.3/4 in 18-49 and 3.3 million viewers overall, maintaining its rating of the prior week in a highly competitive half-hour versus CBS's "Big Bang Theory," ABC's "Last Resort" and Fox's Baseball Playoffs .

* Note that last season "30 Rock" added an average 45 percent to these next-day "live plus same day" ratings when Nielsen reported "live plus seven day" results.

* At 8:30 p.m. ET, "Up All Night" (1.4/4 in 18-49, 3.2 million viewers overall) jumped week to week by 27 percent in 18-49 rating (to a 1.4 from a 1.1) and 12 percent in total viewers (3.240 million vs. 2.883 million) in a highly competitive time period versus CBS's "Two and a Half Men," Fox's Baseball Playoffs and ABC's "Last Resort."

* "Up All Night" is currently building on its 18-49 lead-in by 8 percent, the show's top performance relative to lead-in so far this season, and also built on lead-in by 18 percent in adults 18-34 (with a 1.3 rating vs. a 1.1). The only other 8:30 comedy on ABC, CBS, NBC or Fox this season to build on its 18-49 lead-in has been NBC's "Guys With Kids."

* Keep in mind that last season, "Up All Night" added an average 51 percent to these next-day "live plus same day" ratings when Nielsen reported "live plus seven day" results, the biggest percentage increase for any comedy on ABC, CBS, NBC or Fox.

* From 9-9:31 p.m. ET, "The Office" (2.0/6 in 18-49, 4.3 million viewers overall) delivered its biggest overall audience since September 20. "The Office" built on last night's lead-in by 43 percent in 18-49 rating and 32 percent in total viewers in a competitive time period versus ABC's Grey's Anatomy," CBS's "Person of Interest" and Fox's Baseball Playoffs. This week's "Office" is #1 in the half-hour among ABC, CBS, NBC and Fox in men 18-34.

* Note that last season "The Office" added an average 50 percent to these next-day "live plus same day" ratings when Nielsen reported "live plus seven day" results.

* From 9:31-10 p.m. ET, "Parks and Recreation" (1.6/4 in 18-49, 3.4 million viewers overall) retained 80 percent of its lead-in from "The Office," up from last season's average of 77 percent in this slot. In a challenging time period versus the concluding half-hours of ABC's Grey's Anatomy" and CBS's "Person of Interest," as well as Fox's Baseball Playoffs, "Parks" is currently ranking #1 among those networks in men 18-34 (pending updates).

* Keep in mind that last season "Parks and Recreation" added an average 39 percent to these next-day "live plus same day" ratings when Nielsen reported "live plus seven day" results.

* At 10 p.m. ET, "Rock Center" delivered a 0.9/3 in 18-49 and 3.4 million viewers overall opposite Fox Baseball Playoffs, as well as the time period's regular competition of CBS's "Elementary" and ABC's "Scandal."

In Late-Night Metered Markets Thursday night:

* In Nielsen's 56 metered markets, household results were: "The Tonight Show with Jay Leno," 2.3/6 with an encore telecast; CBS's "Late Show with David Letterman," 3.3/9 with an encore; and ABC's combo of "Nightline," 3.0/7; and "Jimmy Kimmel Live," 1.6/5.

* In the 25 markets with Local People Meters, adult 18-49 results were: "The Tonight Show with Jay Leno," 0.6/3 with an encore; "Late Show," 0.9/4 with an encore; "Nightline," 1.0/4; and "Jimmy Kimmel Live," 0.6/4.

* At 12:35 a.m., "Late Night with Jimmy Fallon" (1.2/4 in metered-market households with an encore) trailed CBS's first-run "Late Late Show with Craig Ferguson" (1.7/6). In the 25 markets with Local People Meters, "Late Night" (0.4/3 in 18-49 with an encore) trailed "Late Late Show" (0.5/4).

* At 1:35 a.m., "Last Call with Carson Daly" averaged a 0.8/3 in metered-market households with an encore and a 0.2/2 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.