sunday
“Cheerleader Nation”|8 p.m., Lifetime
Give me an “R,” give me an “E,” give me an “A,” give me an “L, give me … oh, well, you get the idea. This new unscripted series follows a high school cheerleading squad in Lexington, Ky., vying for its third national title. Sis-boom-bah!
monday
“The New Adventures of Old Christine”|7:30 and 8:30 p.m., CBS, KCNC-Channel 4
You can get a double dose of this new Julia Louis-Dreyfus comedy as she tries again to break the “Seinfeld” jinx. Louis-Dreyfus plays Christine, a divorced mother who’s happy, at least until she discovers her ex-husband has a young girlfriend also named Christine.
tuesday
“Nashville Star”|8 p.m., USA Network
The country version of “American Idol” is back for a fourth season. And every season, it seems, there’s a new set of hosts. This year Wynonna Judd and “hick-hop” artist Cowboy Troy head the proceedings, after which the winner gets a Nashville recording contract.
wednesday
“The Loop”|8:30 p.m., Fox, KDVR-Channel 31
In lieu of continued reruns of “Lost,” give this comedy a whirl. Bret Harrison plays a young airline executive juggling his first grown- up job and his three roommates, who are still in their adolescent phase.
thursday
NCAA Tournament|10 a.m. (and throughout the day), CBS, KCNC-Channel 4
Fans of the CBS soap operas may not be happy, but college basketball fans are ecstatic. Tuesday’s “play-in” game actually started the action, but the real field of 64 begins playing today. If you’re not a hoops fan, try “American Inventor,” the new ABC reality series at 7 p.m. on KMGH-Channel 7.
friday
“What Not to Underwear” |7 p.m. TLC
Fashion experts Stacy London and Clinton Kelly work with three female friends from Seattle with different body types to help them find the sizes and styles that best suit them. Each woman gets $2,000 for her unmentionables shopping spree.
saturday
“Walkout”|6 p.m. HBO
Edward James Olmos directed this docudrama about a group of Mexican-American high school students in East Los Angeles who walked out of classes to protest unfair treatment by the school system in 1968.
– From staff and wire reports
