greys anatomy finale 320 TV Ratings: 'Grey's Anatomy' shooting nabs 18 49 demo, but CBS wins ThursdayFast National ratings for Thursday, May 20, 2010

The “Grey’s Anatomy” season finale was almost enough for ABC to best CBS for an overall win, but the doctors of Seattle Grace couldn’t quite save the night (or several of their team). Instead, the finales of “The Mentalist” and “CSI” took the crown for CBS again.

CBS averaged 12.4 million viewers and a 7.7 rating/13 share in households. ABC was nipping on its heels with 11.8 million and a 7.6/13. FOX’s finales took a respectable third place with 7.4 million, 4.6/8. NBC trailed in fourth, though they were up from last week, with 5.0 million viewers, 3.2/5. The CW’s rerun of “Smallville” was last with 1.4 million and a 0.9/2 share.

ABC took the all-important 18-49 demographic with a 4.1 rating. The other networks were far behind, as CBS had a 2.6, NBC and FOX tied for third with a 2.4 and the CW had a 0.5 in the demo.

Thursday hour by hour:

8 p.m.

“Bones” season finale (9.2 million, 5.7/10)
CBS: “The Mentalist” rerun (8.1 million viewers, 5.2/9
ABC: “FlashForward” (5.3
million, 3.5/6)
NBC: “Community” (4.4 million, 2.9/5)/”Parks
and Recreation” season finales (4.5 million, 2.8/5)
The CW: “Smallville” rerun (1.5 million, 1.0/2)

18-49 leader:
“Bones” (2.8)

9 p.m.

CBS: “CSI” season finale (14.2
million, 8.6/14)
ABC: “Grey’s Anatomy” season finale (13.9 million, 9.0/15)
NBC: “The Office” (6.6 million, 4.0/7)/”30 Rock” season finales
(5.5 million, 3.4/6)
“Fringe” season finale (5.7 million, 3.6/6)
The CW: “Smallville” rerun (1.3 million, 0.9/2)

18-49 leader: “Grey’s
Anatomy” (4.8)

10 p.m.

ABC: “Grey’s Anatomy”
season finale (16.1 million, 10.2/17)
CBS: “The Mentalist” season finale (15 million, 9.3/16)
NBC: “The Marriage Ref” (4.6
million, 3.0/5)

18-49 leader: “Grey’s Anatomy” (5.9)

information includes live and same-day DVR viewing. All numbers are
preliminary and subject to change. Source: The Nielsen Company.

More ratings at Zap2it: Daily,
weekly and cable

Photo credit: ABC

UPDATE: A previous version of this article identified the “FlashForward” episode as the finale, when it was actually the penultimate episode. Our apologies for the egregious error. We have also fixed the 18-49 demo for the 8 p.m. hour.

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."