<I>The Mentalist</i> The Mentalist

Most every broadcast show was dealt a blow by the combo of St. Patrick's Day revelry, daylight savings time and warmer weather. Here are Tuesday's tallies:

8 pm/ET
American Idol's country croonfest was the night's most watched program, delivering 21.54 million total viewers — a 15 percent drop from last week's sing-off. NCIS placed second with a season-low 15.5 mil (down 13 percent from its last fresh outing).

Nipping at the heels of the Dancing with the Stars recap, The Biggest Loser weighed in with 7.9 mil, shedding 15 percent of its previous audience. Reaper (1.88 mil) managed to rid itself of another 290K.

9 pm
Placing second behind Idol, The Mentalist slipped 15 percent to see its smallest audience ever — 15.4 mil. Dancing with the Stars first results show of the season drew 12.42 mil, a 28 percent plunge from the comparable outing a year ago.

10 pm
Without a Trace won the hour with nearly 12 mil, dipping just 215K from its last new episode. Law & Order: SVU scored second with 10.58 mil, dropping 460 thou.