It’s back to the future on CBS. The network replaces its regular Saturday-night repeats with something called “EliteXC Saturday Night Fights” (8 p.m. tonight, CBS). The pugilists (male and female) may be young and the graphics new, but the tradition of broadcasting boxing, or fighting or wrestling, is as old as television itself.

Prime-time boxing in some form or another appeared on all three major networks and the long-defunct Dumont Network as early as 1946. The longest-lasting show, popularly known as Friday Night Fights, appeared as part of the “Gillette Cavalcade of Sports,” which ran on NBC from 1949 to 1960.

CBS continues to rummage through the medium’s attic with “Million Dollar Password” (8 p.m. Sunday, CBS), hosted by Regis Philbin. The original prime-time “Password,” hosted by Alan Ludden, debuted on CBS in 1961 and ran in the evenings until 1967, when it was consigned to the afternoon game-show circuit.

¢ Filmmaker Barbara Kopple sits down with Mildred Muhammad in “The D.C. Sniper’s Wife” (8 p.m. tonight, TruTV), a profile of the woman who witnessed her husband, John Allen Muhammad’s, mental disintegration and who sought legal and police protection from him years before he went on the shooting spree that terrorized the Washington area for 23 days in the autumn of 2002. Only after his arrest did Mildred learn that she was among his intended victims and that his urge to control and punish her proved a motivating force in his rampage.

Filled with home movies and interviews with friends and family members of the Muhammad family, as well as police involved in the manhunt, “Wife” also focuses on Mildred’s belief that John’s service in the first Gulf War was the event that triggered her husband’s change from doting father to paranoid psychopath. “I’d like to go to Saudi Arabia and find my husband,” she observes. “The man who returned isn’t him.”

Saturday’s highlights

¢ Pittsburgh hosts Detroit in Game 4 of the Stanley Cup Finals (7 p.m., NBC).

¢ Dennis Quaid and Rachel Griffiths star in the 2002 sports drama “The Rookie” (7 p.m., ABC).

¢ A musician’s murder inspires a legal crescendo on “McBride” (8 p.m., Hallmark).

¢ An exotic dancer (Anita Ekberg) attracts the attention of a stalker in New Orleans in the 1958 shocker “Screaming Mimi” (9 p.m., TCM).

Sunday’s highlights

¢ Scheduled on “60 Minutes” (6 p.m., CBS): Chicago police corruption; conspicuous consumption in California; death rays and reality.

¢ Mike Myers hosts the 2008 MTV Movie Awards (7 p.m., MTV).

¢ NBA Basketball Finals (7 p.m., ABC), if necessary. If not, see repeats below.

¢ A transgendered victim killed in 1963 attracts interest from the grave on “Cold Case” (8 p.m., CBS).

¢ Donald Sutherland narrates “Stonehenge Decoded” (8 p.m., National Geographic), documenting efforts to uncover new evidence about the people who erected the mysterious stones.

¢ Anne and her alleged lovers are condemned on the season finale of “The Tudors” (8 p.m., Showtime).

¢ Ten vie for the golden spatula on the fourth-season premiere of “The Next Food Network Star” (9 p.m., Food).