Also airing Friday, Aug. 5. 2016: “A Streetcar Named Desire” on TCM and “Mysteries at the Museum” on Travel.

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‘Rio Olympics’

Here we go, after months (and months) of hype and controversy, the Games of the XXXI Olympiad are here. The 17-day event, the first Olympics to be in South America, begins with the opening ceremonies in Maracana Stadium in Rio de Janeiro. 7:30 p.m. Friday on NBC.

Doug Knoop: or on Twitter @dougknoop

Also on Friday

“MLB Baseball,” 7 p.m. (ROOT): Los Angeles Angels of Anaheim at Seattle Mariners (Live).

“A Streetcar Named Desire” (1951), 7 p.m. (TCM): Blanche DuBois moves in with her sister, Stella, and brutish brother-in-law, Stanley Kowalski. Based on the play by Tennessee Williams.

“Kitten Summer Games,” 8 p.m. (Hallmark): Celebrities and athletes cheer on kittens as they compete in various sporting events.

“The Great British Baking Show,” 9 p.m. (KCTS): For alternative-ingredients week, the bakers can’t use sugar, dairy or gluten.

“Mysteries at the Museum,” 9 p.m. (Travel): Examining a gambling geek, a golden experiment and a fearless heroine.

“Love Thy Neighbor,” 9 p.m. (OWN): Hattie’s decision to write her memoirs causes unrest among her family and friends.

“20/20,” 10 p.m. (ABC): Fifty-four years after the death of his first wife, and the disappearance of two other women, Felix Vail is accused of murder.

“Dark Matter,” 10 p.m. (Syfy): Strapped for cash, the crew follows Nyx’s lead on a mission, only to find out the target is personal.