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NBC's 'PARKS & REC' With Guest Star Joe Biden Retains 85% of Lead-In

At 8 p.m. ET, "30 Rock" (1.2/4 in 18-49, 3.4 million viewers overall) maintained 100 percent of the 18-49 rating for its most recent Thursday telecast three weeks ago (1.2/4 on October 25) and is currently up 9 percent in total viewers (3.407 million vs. 3.133 million) in a highly competitive half-hour versus CBS's "Big Bang Theory," Fox's "X Factor" and ABC's "Last Resort." Pending updates, this is currently the #2 "30 Rock" so far this season in total viewers and biggest overall audience since the season premiere on October 4.

* At 8:30 p.m. ET, "Up All Night" (1.3/4 in 18-49, 3.1 million viewers overall) is currently building on its 18-49 lead-in by 8 percent in 18-49 rating, marking a third consecutive telecast to increase on lead-in. The only other 8:30 comedies on ABC, CBS, NBC and Fox to have built on their lead-in even once this season have been NBC's "Guys With Kids" and ABC's "Malibu Country." 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" (2.0/5 in 18-49, 4.1 million viewers overall) is up 5 percent in 18-49 rating versus its prior telecast with a regular lead-in (1.9/5 on October 25) and up 4 percent in total viewers (4.148 million vs. 4.002 million). 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.

* "The Office" tied for #1 in the half-hour among ABC, CBS, NBC and Fox in men 18-34.

* From 9:31-10:01 p.m. ET, PARKS & RECREATION, (1.7/4 in 18-49, 3.6 million viewers overall) retained 85 percent of its 18-49 lead-in from "The Office," up from last week's 71 percent retention. In adults 18-34, "Parks" retained 100 percent of its lead-in (with a 1.8 rating vs. a1.8).

* "Parks and Rec" matched its highest 18-49 rating since October 4 and equaled its second-best rating so far this season.

* "Parks and Recreation" finished #1 in the half-hour among ABC, CBS, NBC and Fox in men 18-34.

* From 10:01-11 p.m. ET, "Rock Center" (1.1/3 in 18-49, 4.0 million viewers overall) is currently up week to week by 10 percent in adults 18-49 (with a 1.1 rating vs. a 1.0), up 15 percent in adults 25-54 (1.5 vs. 1.3) and up 3 percent in total viewers (3.991 million vs. 3.864 million).

* Pending updates, "Rock Center" delivered its second-biggest overall audience since September 20.

In Late-Night Metered Markets Thursday night:

* In Nielsen's 56 metered markets, household results were: "The Tonight Show with Jay Leno," 2.6/7; CBS's "Late Show with David Letterman," 2.8/7; and ABC's combo of "Nightline," 3.2/8; 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," 0.8/4; "Late Show," 0.7/3; "Nightline," 1.1/5; and "Jimmy Kimmel Live," 0.7/4.

* At 12:35 a.m., "Late Night with Jimmy Fallon" (1.4/5 in metered-market households) beat CBS's "Late Late Show with Craig Ferguson" (1.3/4). In the 25 markets with Local People Meters, "Late Night" (0.5/3 in 18-49) topped "Late Late Show" (0.4/2).

* At 1:35 a.m., "Last Call with Carson Daly" averaged a 0.9/4 in metered-market households and a 0.3/3 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.