Keep the kettle on

Those hoping to spend the entire holiday weekend with the Crawleys will get their wish. TPT is airing the entire run of “Downton Abbey” in consecutive order, a 76-hour feast beginning at 7 p.m. Friday with only a couple interruptions — one for a new episode of “Sherlock” (8 p.m. Sunday), in which our favorite sleuth (Benedict Cumberbatch) has his hands full with the Watsons’ new baby — and a new villain, played by Toby Jones.

TPT, Ch. 2

I could have danced all night

If “La La Land” has whetted your appetite for old-fashioned musicals, you won’t want to miss TCM’s lineup of “That’s Entertainment,” three compilations of classic numbers from the MGM vaults, hosted by a who’s-who of hoofers including Fred Astaire and Gene Kelly. The irresistible lineup is followed by “That’s Dancing,” a 1985 offering that also includes clips from rival studios.

7 p.m. Saturday, TCM

The best of 2016

“O.J.: Made in America,” a clear front-runner for best documentary at the Oscars, gets a repeat run just in time for viewers to see why it topped the list of so many critics’ top 10 lists, including mine. The eight-hour running time may seem daunting, but two intermissions will be offered so you can take time to stretch your legs and reflect on a film that explores celebrity, race, the justice system and other weighty topics.

3 p.m. Sunday, Viceland

Standard procedure

“We left the textbooks behind a long time ago,” says a character to a new recruit in “Ransom,” a new procedural that’s getting a high-profile debut before moving to its regular Saturday slot next weekend. Actually, the series follows the CBS playbook to the letter as the leader of a crisis negotiation team (Luke Roberts, a British actor doing a fine impersonation of George Clooney) coolly handles one crisis after another, even taking his daughter’s phone call on his way to confronting a freaked-out hostage taker. The network certainly has a winning formula, but suggestions that this is anything more than another version of “CSI” are laughable.

7:30 p.m. Sunday, WCCO, Ch. 4Neal Justin