Taylor Swift isn’t just a big concert draw, the country music sensation is a ratings hit as well. Swift’s stint on CSI helped give the CBS program a nice boost on Thursday night. Unfortunately, that other musical hit (a.k.a. American Idol) was also around to do its thing.

8pm

• American Idol (21.2 million, 7.5/20 in 18-49) picked up 500,000.
• Survivor: Tocantins (12 million, 3.8/10) slipped by 300,000.
• Ugly Betty (6.4 million, 1.7/5) gave up 400,000.
• My Name is Earl (2.2/6) returned to 5.6 million; Kath & Kim (4.2 million, 1.8/5) improved by 800,000.
• Smallville* (2.2 million, 0.8/2) was on par with last week.

9pm

• CSI (20.8 million, 5.3/13 in 18-49) rounded up 3 million more.
• Hell’s Kitchen (10.6 million, 4.6/12) served up 700,000.
• The Office (4.5/11) courted 8.6 million; 30 Rock (7.4 million, 3.8/9) was up 1.1 million.
• Grey’s Anatomy* (5.7 million, 1.6/4) fell by 1.1 million.
• Supernatural* (2 million, 0.8/2) did about the same.

10pm

• Eleventh Hour (12.2 million, 3.0/8 in 18-49) added on 500,000.
• ER (8.8 million, 3.5/10) remained steady.
• Private Practice* (4.5 million, 1.3/4) shaved off 200,000.

*denotes repeat

(You can review last Thursday’s ratings here.)