The Office's Steve Carell, 30 Rock's Tina Fey

Angela Bromstad, NBC's president of primetime entertainment, announced at Thursday's TCA Winter Press Tour that the Peacock has picked up new seasons of The Office, 30 Rock and The Biggest Loser.

NBC's The Office is in its fifth season and will enjoy an hour-long après-Super Bowl showcase on Feb 1, while 30 Rock currently is unspooling its third cycle.

Now in its seventh cycle, The Biggest Loser just last week weighed in with its largest audience ever (11.82 million viewers) for a season opener.

Bromstad also confirmed that ER's final run is being extended by three episodes, so as to allow John Wells a bit more time to ready Southland, his new police drama taking over the Thursdays-at-10 time slot starting April 9. ER will now sign off April 2, with a three-hour "extravaganza" featuring a two-hour retrospective.

We have to wonder: Might the three additional weeks also afford ER's creator more time to woo George Clooney back for a last hurrah? Bromstad told TVGuide.com with a laugh, "I'll let you ask John Wells that!"