Ratings - Greatest Hits - Official Nielsen Ratings

Jumping from its lead-in by 8.2 million viewers (12.1 million vs. 3.9 million) and by 183% in young adults (5.1/13 vs. 1.8/4), "Lost" dominated the 10 o'clock hour, beating season finales on CBS ("C.S.I.: NY") and NBC ("Medium") across the key adult demographics. In the time slot, ABC's "Lost" outdelivered second-place CBS, with the season closer of "C.S.I.: NY," by 68% in Adults 18-34 (4.2/12 vs. 2.5/7), by 31% in Adults 18-49 (5.1/13 vs. 3.9/10) and by 17% in Adults 25-54 (5.6/14 vs. 4.8/11).

* "Lost" was up week to week among Adults 18-49 (5.1/13 vs. 5.0/13) and across each of the key men demographics: M18-34 (3.8/12 vs. 3.4/11), M18-49 (4.5/12 vs. 4.1/12) and M25-54 (5.0/13 vs. 4.9/13).

* The ABC drama has topped Wednesday's 10 o'clock hour in the key Adult 18-49 sales demographic on all 15 telecasts since entering its new time slot. In addition, it ranks as No. 1 scripted program on Wednesday this season and has been the top-rated scripted series of the night among Adults 18-49 for 6 consecutive weeks.

* Despite its late time period and declining overall television usage levels, "Lost" grew by 7% in Total Viewers (11.7 million to 12.5 million) and by 8% among young adults (4.9/12 to 5.3/14) from its first half-hour to its second half-hour.

* The penultimate episode this season for "Lost" improved its hour for ABC over the same night last year by 4.5 million viewers and 70% in Adults 18-49 (7.6 million & 3.0/8 on 5/17/06).

Source: Nielsen Media Research