And the award for laziest programming goes to … ABC. The alphabet network’s entire Saturday night prime-time schedule consists of the three-hour 1977 James Bond thriller “The Spy Who Loved Me,” (7 p.m., ABC) starring Roger Moore. Now, I love Bond movies as much as the next guy, but this movie has been run to death on cable. According to a spokesman for TBS, that cable network has shown “The Spy Who Loved Me” 28 times since 1991. Twenty-eight times! Now that’s a rerun.

Maybe ABC should start shoplifting from TNT’s vault of golden oldies and broadcast “Red Dawn” and “Road House” on Saturday nights! The network has already revamped its weeknight programming with documentary miniseries that might have been cooked up on the TLC network. To be fair, ABC is not the only network to become a cable clone. Last summer, NBC also resorted to repeats of “Animal House,” and “Caddyshack,” two other TBS staples, to fill up Saturday nights. This kind of brazen imitation is driving away network viewers.

When the feminist movement began a generation ago, few predicted that sports would take center stage. The documentary “On the Basis of Sex: The Battle of Title IX,” (7 p.m., ESPN) explores the revolutionary changes in women’s athletics and young women’s attitudes since Title IX was signed into law on June 23, 1972.

As recently as 1967, women were simply banned from the Boston marathon. Runner Katherine Switzer explains how she had to “crash” the race, and how she was physically accosted and ordered to stop running. By the early 1970s, women athletes like Billie Jean King were lobbying for equality for female athletes. “On the Basis” shows how Title IX was quietly added to a 1972 amendment to the Civil Rights act, and explores many of its unintended consequences. The documentary will be followed by “On the Basis of Sex: A Title IX Town Meeting,” (8 p.m.), a live discussion of the law’s impact on society and athletics, moderated by ESPN’s Bob Ley. Participants include University of Connecticut basketball coach Geno Auriemma and Olympic gold medallist Nancy Hogshead.

Based on a true story, “Point of Origin,” (7 p.m., Saturday, HBO) follows investigator John Orr (Ray Liotta) as he attempts to catch a serial arsonist responsible for a series of deadly fires in southern California. Liotta brings his usual intensity to his role as a beefy no-nonsense sleuth who battles both blazes and Fire Department politics with a steely concentration. “Origin” also features John Leguizamo in a rare low-key performance as Orr’s partner. Unfortunately, relentless special effects and other visual gimmicks often overshadow the story.

Today’s other highlights

John Voight, Leelee Sobieski and Hank Azaria star in “Uprising,” (7 p.m., NBC), an edited version of the compelling 2001 miniseries about the Warsaw Ghetto uprising.

An amnesiac (Guy Pearce) tries to make sense of recent events in the 2000 drama “Memento” (7 p.m., Starz). A clever experiment in storytelling, this film unfolds in reverse chronological order.

Ian McKellen is host of “Saturday Night Live,” (10:30 p.m., NBC) with musical guest Kylie Minogue.

Sunday’s highlights

Scheduled on “60 Minutes,” (6 p.m., CBS): President Lyndon Johnson’s secret tapes and the con man who pretended to be a Rockefeller.

The 1998 drama “Ruby Bridges” on “The Wonderful World of Disney,” (6 p.m., ABC) looks at the civil rights struggle through the eyes of a child. Based on a true story.

A father stands trial for the murder of his son on “Crime & Punishment,” (9 p.m., NBC)

Rob Morrow stars as a recently released drug dealer in the new series “Street Time,” (9 p.m., Showtime).