* American Idol (8 pm/ET Fox)
Which singers have a mojo for Motown? Our toned-up and tuned-in Top 10 mowed down Motown last night, singing classic R&B staples in a tribute to "50 Years of Motown." But America has the final say, the votes are tallied, and the contestants will discover who goes and who stays (but probably after an irritatingly placed commercial) in tonight's supplemental results show. The Motown theme will continue with genre giant Smokey Robinson performing, and past Idol winner Ruben Studdard rendering his single "Together."
* NCAA Basketball Tournament (7 pm/ET CBS)
Cinderella got trampled on her way to the Sweet 16. With the top four seeds making the East Regional semifinals, and the top three and Purdue (the No. 5 Boilermakers beat No. 4 Washington on Saturday) the entrants in the West, fans at tonight's games won't have any legitimate underdogs to support. There are three Big East powerhouses taking the court this evening: Pittsburgh, Connecticut and Villanova.
* 30 Rock (9:30 pm/ET NBC)
When the going gets tough, the tough get...sentimental? Precious feelings of nostalgia hit some rough and tough men tonight. First it's corporate strongman Jack turning warm and fuzzy. As his 50th birthday approaches, he sets out to re-create happy moments from his bygone boyhood after watching old reels of home movies. Then there's eccentrically acerbic Tracy, who focuses on finally fulfilling a childhood dream. Also in the mix: Liz's boorish ex-flame Dennis Duffy (Dean Winters). This Dennis is a menace. He returns to confess about an addiction, but the admission only stirs up catty friction between Liz and Jenna.
* Super Botox Me (9 pm/ET BBC AMERICA)
If you've ever considered going under the knife to improve your appearance, watch this documentary first. It follows British journalist and human guinea pig Kate Spicer as she embarks on a very personal investigation of plastic surgery. Having attempted extreme dieting for the 2006 doc Super Skinny Me, she's now testing some of the latest (and craziest) cosmetic procedures available in the U.S. and Britain, from stem-cell fat transfers to bull-semen hair treatment. Ummm, no thank you!
* In the Motherhood (8 pm/ET ABC)
If you've ever watched a sitcom and lamented, "This would never happen in real life," then ITM could alter that perception. Art imitates life in this new show, which is based on a Web series inspired by true stories from actual mothers. In this version, the small-screen alter egos are Jane (Cheryl Hines), Rosemary (Megan Mullally) and Emily (Jessica St. Clair), and in tonight's premiere, Jane reenters the dating pool, while Emily's attempt to be honest with her young son backfires.
* Live from Lincoln Center (8 pm/ET PBS (check local listings))
The series' 34th season kicks off with Wynton Marsalis and the Lincoln Center Jazz Orchestra who, fresh from a national tour, showcase their chops on such road-tested favorites as "When the Saints Go Marching In" and "St. James Infirmary." The set also includes classics by the likes of Duke Ellington, Dizzy Gillespie and Charles Mingus and a few of their own compositions, too.