If ever there was a series to define the nebulous new streaming service HBO Max, it’s “The Flight Attendant” (HBO Max, streaming) which is essentially a version of HBO’s old “The Night of” except starring Kaley Cuoco from “The Big Bang Theory.”

Instead of a tense mystery about a suspect who awakens in a bed next to a bloodied body, this one is played for laughs as much as thrills, with Cuoco’s party girl stewardess character understandably freaking out as authorities close in, and the victim (Michiel Huisman) keeps talking to her, evoking the macabre tone of “Dead to Me.” The supporting cast includes Zosia Mamet, Rosie Perez and T.R. Knight. 

In the new comedy film “Superintelligence” (HBO Max, streaming), Melissa McCarthy plays a woman who is spied on by an entity that takes over her artificial intelligence devices. It’s the fourth comedy directed by McCarthy’s husband Ben Falcone that stars her; Bobby Cannavale, James Corden, Bryan Tyree Henry and Jean Smart also appear.

The new action film “Mosul” (Netflix, streaming) is set in the waning days of the Iraq war as a SWAT team there works to clear ISIS holdouts in the city named in the title. With a cast of Middle Eastern stars speaking Arabic dialect of the region, it is nonetheless produced by the directors behind “Avengers: Endgame.” 

Here’s a big holiday night showcase, though: The premium cable debut of Sam Mendes’ World War I movie “1917” (Showtime, 9 p.m.).