Update: Here's ABC's take on the ratings.
“Lost” (9:00-10:00 p.m.)
Despite facing stiff, established time-period competition on CBS (“NCIS: LA”) and NBC (“Biggest Loser”), as well as Fox’s “American Idol”-inflated series debut of “Past Life,” ABC self-starter “Lost” shot up from its lead-in by 6.1 million viewers (11.0 vs. 4.9 million) and by 188% in young adults (4.9/12 vs. 1.7/4) and built its audience from start to finish (+4% in viewers/+6% in young adults). “Lost” dominated the 9 o’clock hour for its 2nd straight telecast in the key young Adult sales demo, defeating its nearest competitors by 23% (CBS and NBC tied at 4.0/10) and fourth-place Fox by 58% (3.1/8).
On its new night, “Lost” qualified as Tuesday’s No. 1 scripted TV show for the 2nd week in a row in Adults 18-49, Adults 18-34 and across key Men (M18-34/M18-49/M25-54).
“Lost” was up from its performance on the same week last year by 1.2 million viewers and by 11% in Adults 18-49 (9.8 million and 4.4/10, Wednesday 9:00 p.m. on 2/11/09).
“Lost” delivered enormous year-to-year time period improvement for ABC, boosting the hour by 6.6 million viewers and by 125% in Adults 18-49 over the year-ago night with original programming (4.4 million and 2.0/5 – originals of “Scrubs”).
Excluding only last week’s sixth-season premiere, “Lost” posted its highest-rated telecast in nearly 2 years among Adults 18-34 (5.0/14) – since 2/21/08.
Source: ABC
Source: TVByTheNumbers