Thursday's ratings snapshot:
* 8 pm/ET
American Idol's lucky number was (Top) 13, as it won the night with an audience of 21.24 million total viewers, a 6 percent dip from Wednesday's results show. Survivor placed a distant second with 11.98 mil (down 300K week-to-week), followed by Ugly Betty (slipping 430 thou, to 6.38 mil).
NBC's Earl (5.55 mil) dropped 17 percent from its last fresh outing, while Kath & Kim (4.16 mil) saw a decent gain.
* 9 pm
CSI nipped at Idol's heels for best-of-night honors, surging 17 percent to deliver 20.8 million viewers. That's the procedural's biggest draw since Grissom said goodbye. (Um, thanks, Taylor Swift...?) With Grey's taking a knee (and goosed by Idol's overrun), Hell's Kitchen cooked up a second-place finish with 8.63 mil.
* 10 pm