Fast National ratings for Thursday, May 1, 2008

Thursday's ratings shook out the way they usually do, with CBS and "CSI" winning the overall title and ABC leading among adults 18-49.

CBS averaged a 9.1 rating/15 share for the night, beating out ABC's 7.6/12. FOX, 5.0/8, came in third. NBC took fourth with a 4.4/7, and The CW earned a 2.0/3.

Among adults 18-49, ABC's 4.4 rating, though down from last week, was good enough for the top spot. CBS finished second in the demographic with a 4.1, followed by NBC at 3.0. FOX averaged 2.3 and The CW 1.3.

"Survivor: Micronesia - Fans vs. Favorites" (7.7/13) put CBS on top at 8 p.m. ABC's "Ugly Betty," 5.6/9, finished second in households, but "Are You Smarter Than a Fifth Grader?," 5.4/9, brought more viewers to FOX. "My Name Is Earl," 4.4/8, and "Scrubs," 3.8/6, came in fourth for NBC. The CW's "Smallville" trailed.

At 9 p.m., "CSI" grabbed the night's biggest audience with an 11.0/17. "Grey's Anatomy" posted a 10.2/16 for ABC (and led the hour among adults 18-49). "Don't Forget the Lyrics" kept FOX in front of "The Office," 4.7/7, and "30 Rock," 3.4/5, on NBC. "Supernatural" delivered a 1.6/3 for The CW.

"Without a Trace" completed CBS' sweep of the night with an 8.7/15 at 10 p.m. "Lost" scored a 7.0/12 for ABC, and "ER" came in at 5.1/9 for NBC.

Ratings information is taken from fast national data, which includes live and same-day DVR viewing. All numbers are preliminary and subject to change.