A true story from the life of legendary Oklahoma lawman Bill Tilghman comes to TNT on Sunday at 8 p.m., with the premiere of "You Know My Name."

Sam Elliott plays Tilghman, who finds that the code of the West, which he has followed all his life, no longer applies in 1924 when he comes out of retirement to help the oil-boom town of Cromwell, Okla., fight off machine-gun wielding gangsters.

Oil discoveries in the Sooner State more than doubled the population in many towns and brought in a wave of bootleggers, swindlers and heavily armed gangsters, a new breed for Tilghman.

Arliss Howard co-stars.

The TNT film encores at 10 p.m. and midnight, Wednesday at 8 p.m., Friday at 10 p.m. and Aug. 29 and Sept. 1 and 5.

* Sunday on Sci-Fi Channel at 7 p.m., the eight most popular episodes of "Alien Nation" as chosen by fans who voted online during the past two weeks. The viewer-choice marathon ends at 3 a.m.

* Sunday on Showtime at 8 p.m., "A Cooler Climate" stars Sally Field as a woman who takes a job as a housekeeper after her divorce. The story, from a Zena Collier novel, takes an odd turn when the rich woman for whom Field works, played by Judy Davis, also finds herself going through a divorce, and an unlikely friendship blooms. Repeats: Thursday at 8 p.m., Aug. 29 and Sept. 1, 4 and 19.

* Sunday on Fox Family Channel at 8 p.m., "Au Pair," a movie about an MBA graduate who is downsized out of her dream job and takes a position caring for the two children of an executive (Gregory Harrison). She also must put up with his child-hating girlfriend (Jane Sibbett) during a trip through Europe. The romantic comedy repeats Saturday at 8 p.m.

* Sunday on VH1 at 9 p.m., "Ricky Nelson: Original Teen Idol," the second in VH1's series of original films about music celebrities. Jamey Sheridan and Sara Botsford play Ozzie and Harriet Nelson, and newcomer Gregory Calpakis stars as their son Ricky.

* Monday on A&E Network at 8 p.m., "Biography" looks at Dorothy Dandridge, the first African-American dramatic female movie star. According to the profile, Dandridge was plagued with self-doubt and bent on self-destruction during her turbulent and tragic life. The documentary arrives on the heels of HBO's bio-pic last Saturday. Repeats at midnight.

* Monday-Wednesday on TLC at 9 p.m., "When Dinosaurs Ruled," a global journey to five "lost worlds," each home to a unique cast of dinosaurs. "Ground Zero" and "The Real Jurassic Park" air Monday at 9 and 10 p.m.; "The Land That Time Forgot" and "At the Ends of the Earth" air Tuesday at 9 and 10; and "Birth of the Giants" is scheduled for Wednesday at 9. Repeats begin each day at midnight.

* Monday-Thursday on Bravo at 10 p.m., rock-and-roll rules this week with "Bravo Profiles" documentaries about the lives and times of famous stars. On Monday, The Mamas & The Papas -- John Phillips, Cass Elliot, Michelle Phillips and Denny Doherty; on Tuesday, Eric Clapton; on Wednesday, in a premiere offering, Madonna; and on Thursday, Sting, following a Bravo Arena Special, "This Way Up: R.E.M."

* Wednesday on TBS Network at 8:05 p.m., "National Geographic Explorer" presents an explanation of the complex characteristics of India's giant honeybees in a segment called "Deadly Bees of Assam." Repeats at 12:25 a.m. and Saturday at 10 a.m.

* Friday on The Nashville Network at 9 p.m., "Rollerjam" returns for a second season featuring roller derby thrills with daring speed by some of the country's fastest in-line skaters. The initial telecast will originate from Universal Studios in Orlando, Fla., and repeat on Saturdays at 5 p.m.