Three weeks into its 12th season, last night’s two-hour American Idol (5.4/14) headed to San Antonio for more auditions. The second-to-last audition show of the season was by far the night’s most-watched show, pulling in 15.59 million viewers. Steady with last week’s fast nationals, last night’s Idol did slip 8% from the comparable Season 11 show. That could change, however; last Wednesday Idol actually went up a tenth when the finals came in. Still, Fox won the night in viewership and the adults 18-49 demo.

Leading into Sunday’s big game, CBS’ Super Bowl’s Greatest Commercials 2013 (2.1/6) offered a sneak peek at some of the big ads scheduled to air during the San Francisco 49ers-Baltimore Ravens matchup. Hosted by The Talk’s Aisha Tyler and former QB Boomer Esiason, the one-hour show was up 5% from last year and drew 9.97 million viewers, making it the second-most-watched show of the night. Greatest Commercials 2013 was up more than 1 million viewers from last year’s 8.58 million for its best showing in two years. The rest of CBS’ primetime featured encores of Criminal Minds (1.6/4) and CSI (1.6/4).

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Over on NBC, Whitney (1.3/4) was back with new shows after three weeks. The comedy dipped 7% form it January 9 episode. Guys With Kids (1.1/3) was also back with a new episode after three weeks. The freshman comedy fell 15% from its last new show to tie a series low. Head to head with Idol for the first time this season, Law & Order: SVU (1.7/4) was down 19% from its last new airing on January 9. Out of the Idol line of fire, Chicago Fire (2.0/6), which recently saw another episode added to its freshman season by NBC, slipped 9% from its last original three weeks ago.

ABC started the night with an encore of The Middle (1.3/4) The Neighbors (1.6/4) was next, falling 20% from last week, tying a series low. That was followed by a Modern Family (2.1/5) repeat and a new episode of Suburgatory (1.8/5). Suburgatory fell 18% from its January 23 show to also tie a series low. ABC ended the night with a repeat of Nashville (0.9/3).

The CW had new episodes of Arrow (0.9/3) and Supernatural (0.9/2). Arrow was down two tenths from last week, while Supernatural was even with its January 23 show.

Deadline's Dominic Patten - tip him here.