Jay Leno

Jay Leno went out (again) on a high note.

The host's final Tonight Show Thursday drew 14.6 million viewers and a 3.8 in the adults 18-to-49 demographic, making it the show's biggest audience since Jerry Seinfeld visited the night of the sitcom's finale on May 14, 1998. Leno's first exit in May 2009 drew 11.9 million.

Jay Leno's most memorable Tonight Show moments

NBC has a lot to celebrate in prime time as well. Its first night of Olympics coverage drew 19.6 million  and a 5.8 , helping the network win the night. The numbers are down from the first night of competition of the 2010 Winter Olympics (26.2 million, 7.9), but that took place on a Saturday.

CBS' lineup held up well against the Games, namely The Big Bang Theory, which still grabbed 17.2 million and a 5.0, down two tenths from last week.

On Fox, American Idol (10.9 million, 3.0) and Rake (4.3 million, 1.1) were both down two tenths.

The CW's Vampire Diaries (2.1 million, 0.9) hit a series low and Reign (1.7 million, 0.6) was flat, while ABC's The Taste (3.2 million, 1.0) dipped a tenth.

8 p.m.
CBS: The Big Bang Theory 17.2 million (5.0); The Millers 10.9 million (2.7)
ABC: The Taste 3.2 million (1.0) [8-10 p.m.] 
Fox: American Idol 10.9 million (3.0)
NBC: Winter Olympics 19.6 million (5.8) [8-11 p.m.] 
CW: The Vampire Diaries 2.1 million (0.9)

9 p.m.
CBS: The Crazy Ones 7.6 million (1.7)Two and a Half Men 8.1 million (1.8) 
Fox: Rake 4.3 million (1.1)
CW: Reign 1.7 million (0.6)

10 p.m.
CBS: Elementary 9.3 million (1.8)
ABC: Shark Tank (R) 3.3 million (0.9)