By James Hibberd
Updated December 18, 2012 at 05:23 PM EST

The CW’s Gossip Girl went out on a (relatively) high note.

The final episode of the CW’s brand-establishing soap delivered 1.5 million viewers and a 0.8 rating among adults 18-49, the show’s best performance this season. Along with a special Gossip Girl retrospective at 8 p.m., this was the network’s best Monday performance in a year.

Over on NBC, a preview of the new White House comedy 1600 Penn performed somewhat modestly given its big lead-in from The Voice. The Josh Gad sitcom had 7.2 million viewers and a 2.3 rating in the demo, coming after The Voice‘s 13.3 million and a 4.1 rating. By comparison, the 1600 performance was down 8 percent from The New Normal‘s post-Voice preview earlier this fall.

Also Monday: CBS was the top network for the second Monday in a row, with How I Met Your Mother and Mike & Molly posting slight gains, while 2 Broke Girls slipped due to The Voice expanding into the 9 p.m. hour this week.

Full chart: