The 9pm hour proves to be Thursday night’s most heated battleground.  And just like Wednesday night, ABC ruled the 18-49 age group while CBS gathered the largest audience.

8pm

• Survivor: China (14 million viewers, 4.5/13 in 18-49 demo) easily won the hour in viewers and the valuable age group.
• Ugly Betty (3.5/10) grew by 500,000 to 10.4 million.
• My Name Is Earl (7.7 million, 1/9) was down about 250,000; 30 Rock (6.6 million, 3.0/8) lost three times as much.
• Are You Smarter Than a 5th Grader (8.2 million, 2.3/7 in demo) came in fourth while Smallville (4.8 million, 1.9/5) hung in there.

9pm

• Grey’s Anatomy (18.9 million, 7.8/19 in 18-49) led the night in the demo market.
• CSI (19.6 million, 6.0/14) raked in just enough viewers for evening’s win (despite being down about 1 million).
• The Office (8.9 million, 4.7/11) gained about 410,000 viewers from last week while Supernatural (3.2 million, 1.2/3) was up over 250,000.
• Don’t Forget the Lyrics (1.8/4) came in fourth with 5.6 million viewers overall.

10pm

• Although down 18% from its debut, Without a Trace (13.6 million, 3.6/10 in 18-49) ruled the hour in viewers.
• Big Shots (9.3 million, 3.6/10) was up 600,000 while ER (8.4 million, 3.4/10) was down about the same.