“Fab Five: The Texas Cheerleader Scandal” (8 p.m. tonight, Lifetime) is so cheesy, predictable and unoriginal that I couldn’t keep my eyes off of it.

I don’t get the subtitle. Nobody speaks with a trace of a Texas accent, and no references are made to that state’s distinctive culture or locales.

This tale of teen tantrums, girls gone wild and brats without boundaries could take place anywhere.

A clique of five self-absorbed cheerleaders becomes the scourge of the school corridors until a new teacher, Emma (Jenna Dewan), arrives to coach the squad. At first, she has the support of the high school principal (Tatum O’Neal), but not for long.

Many teens-out-of-control movies resemble horror movies, where bad behavior is punished in the end, often gruesomely. “Fab” unfolds more like a Western, with Emma taking on the role of Gary Cooper in “High Noon.” She’s wearing a star and a white hat, but she soon discovers that everybody in power abandons her when the chips are down.

¢ David Hyde Pierce (“Frasier”) hosts “The Forgetting: A Portrait of Alzheimer’s” (8 p.m. Sunday, PBS, check local listings), a documentary updated since its first 2004 broadcast. Presenting painful anecdotes and a comprehensive history of the affliction, “Forgetting” also offers a harrowing glance into the future. In 2004, the film noted that the number of people with Alzheimer’s had increased from 500,000 to 5 million in less than 10 years. At that rate of proliferation, the cost of caring for patients could consume the entire federal budget by the year 2030.

¢ A winner emerges on the season conclusion of “Design Star” (8 p.m., Sunday, HGTV), followed by “Summer Showdown: Battle of the Design Star Judges” (9 p.m.).

¢ “The Fastest Man on No Legs” (9 p.m., Sunday, BBC America) profiles a double amputee who has trained to sprint on artificial limbs.

Tonight’s highlights

¢ On two episodes of “The Office” (NBC), Michael’s crush (7 p.m.), Ryan’s club scene (7:30 p.m.).

¢ Jenny McCarthy hosts a “WWE Saturday Night Main Event” (8 p.m., NBC) special focused on raising awareness of children with autism.

¢ Dick Van Dyke stars, along with his son Barry and two grandsons, in the feature-length mystery “Murder 101” (8 p.m., Hallmark).

¢ The second season of “Robin Hood” (8 p.m., BBC America) concludes with a reunion in the Holy Land.

¢ “Curse of the Tasmanian Devil” (7 p.m., National Geographic) looks at a rare cancer threatening this unique island critter.

¢ An illusionist’s vanishing act works too well on “Law & Order: Criminal Intent” (9 p.m., NBC).

¢ Eli gets a glance at his future on “Eli Stone” (9 p.m., ABC).

Sunday’s highlights

¢ Scheduled on “60 Minutes” (6 p.m., CBS): Dubai ascendent; Bill James, the Red Sox’s statistics analyst.

¢ Summer’s fleeting. The Colts and Redskins meet in an NFL preseason game (7 p.m., NBC).

¢ TCM’s daylong Gregory Peck festival omits “To Kill a Mockingbird” (!?) but includes “Roman Holiday” (7 p.m., TCM) with Audrey Hepburn.

¢ Idle hours give way to a perilous mission on “Generation Kill” (8 p.m., HBO).

¢ A high school drug problem may be linked to the base on “Army Wives” (9 p.m., Lifetime).