Fox in top spot, but CBS' 'NCIS' gathers strength

An Avril Lavigne/Katy Perry-fueled “American Idol” followed by “Human Target” was clearly more than enough to give Fox a dominant win Tuesday night, though “Idol” saw 12% slippage from a week ago. CBS’ “NCIS” franchise continues to gather strength and be unafraid in going up against the reality juggernaut.

“Idol” earned a 8.9 rating/24 share in the 18-49 demo, with 24.1 million viewers tuning in to see combative guest judge Perry have a few verbal throwdowns with Kara DioGuardi as the troupe was in Los Angeles for auditions. Through the first five installments, “Idol” is down 4% in the demo and 3% in total viewers compared to a year ago.

Eye’s “NCIS” (4.1/11, 20.1m) and spinoff “NCIS: LA” (3.8/10, 17.1m) have proven to be a formidable foe to “Idol’s” Tuesday dominance. Net offered a repeat of “The Good Wife” (2.1/6, 10.3m) at 10 p.m., which was slightly good enough to beat NBC’s “The Jay Leno Show” (2.0/6, 6.3m) and the second hour of “Lost” (1.5/4, 3.6m) on ABC.

The Alphabet’s repeat of last season’s “Lost” finale at 9 o’clock (1.3/3, 3.2m) was used to build momentum for the final season Feb. 2 debut with a one-hour recap and two-hour premiere.

NBC’s two-hour “The Biggest Loser” (3.8/10, 9.6m) was down 7% from a week ago but easily defeated Fox’s “Human Target” (3.2/8, 9.6m; down 6% from its last original telecast) in the 9 p.m. timeslot.

CW aired repeats of “90210″ (0.4/1, 960,000) and “Melrose Place” (0.4/1, 881,000).

Preliminary 18-49 averages for the night: Fox, 6.1/16; CBS, 3.3/9; NBC, 3.2/9; Univision, 1.5/4; ABC, 1.3/3, CW, 0.4/1.

In total viewers: Fox, 16.8 million; CBS, 15.8 million; NBC, 8.5 million; Univision, 3.9 million; ABC, 3.2 million; CW, 920,000.

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