Explorer: In the new episode “Nazi Mystery: Twins From Brazil,” a town filled with blond-haired, blue-eyed twins in the remote Brazilian jungle may be the result of efforts made by infamous Nazi war criminal Josef Mengele, who a historian says may have continued his obsessive quest to engineer a master race after fleeing Germany to South America (6 and 9 p.m. National Geographic).
The 25th Anniversary Rock and Roll Hall of Fame Concert: A four-hour megaconcert spotlighting a host of iconic musicians at Madison Square Garden commemorates the institution (8 p.m. HBO).
Cowboys & Outlaws: The historical series tells the story of Billy the Kid, who killed 21 men. (9 p.m. History); a second new episode titled “The Real Lonesome Dove” follows at 10.
Meet the Natives: USA: This new series premieres with five tribesmen from the South Pacific island of Tanna staying with an American family on their ranch in Montana. In a second episode, the tribesmen visit New York City (10 p.m. Travel).
Behind the Magic: Disney Holidays: This new special documents preparations that go into decorating Walt Disney World for the holiday season (8 p.m. HGTV).
The Shop Around the Corner: Alfred and Klara (James Stewart, Margaret Sullavan) are rival store employees who constantly argue, not realizing that they have been corresponding with each other through the mail, in this 1940 romantic comedy (6:45 p.m. TCM).
The Dog Who Saved Christmas: Zeus (Mario Lopez), a crafty canine who previously had shown little aptitude as a guard dog, jumps to the rescue when two bumbling thieves target his master’s home during the holidays in this yuletide-themed TV comedy (8 p.m. ABC Family).
Tinker Bell and the Lost Treasure: Tinker Bell journeys to the far north to save a Pixie Dust Tree in this 2009 animated children’s film featuring the voices of Mae Whitman and Kristin Chenoweth (8 p.m. Disney).
The National Tree: A man and his son (Andrew McCarthy and Evan Williams) embark on a cross-country road trip to transport a Christmas tree to Washington, D.C., in this new TV holiday movie (8 p.m. Hallmark).
A Dog Named Christmas: A mentally challenged young man (Noel Fisher) embarks on a mission to find dogs homes for the holidays. Bruce Greenwood and Linda Emond also star in this new Hallmark Hall of Fame production (9 p.m. CBS).
Pro football: The Washington Redskins visit the Philadelphia Eagles (10 a.m. Fox); the Kansas City Chiefs visit the San Diego Chargers (1 p.m. CBS); the Chicago Bears visit the Minnesota Vikings (1 p.m. Fox); the Pittsburgh Steelers visit the Baltimore Ravens (5:15 p.m. NBC).
Pro basketball: The Memphis Grizzlies visit the Clippers (12:30 p.m. FS Prime). The New Jersey Nets visit the Lakers (6:30 p.m. FSN).
College basketball: Nebraska at USC (1:30 p.m. FSN); 76 Classic: Consolation Game (2 p.m. ESPN2); Final (7 p.m. ESPN2). Nevada at North Carolina (3:30 p.m. FS Prime); Old Spice Classic Final (4:30 p.m. ESPN2).