8 p.m. on 5 8, “Running Wild With Bear Grylls” — The mention of Tom Arnold likely inspires thoughts of his humor, but on the physical front, he lost 100 lbs. Thus, he’s more fit than one might think as he becomes the subject of a Grylls celebrity challenge in the wilderness in this new episode. Not that there won’t be joking along the way — this is still Tom Arnold, after all — but he’s sure to find that the paces Grylls puts him through are no joke.

8:30 p.m. on 6, “Mom” — Oscar winner Octavia Spencer (“The Help”) soon will star in the new series “Red Band Society,” and one of her warm-ups for weekly television work is seen in “Toilet Wine and the Earl of Sandwich.” Her character here is on her way to prison, and Christy and Bonnie (Anna Faris, Allison Janney) help her resolve certain matters first.

9 p.m. on 6, “Mike & Molly” — Should someone keep a secret about a friend from his or her spouse? Molly (Melissa McCarthy) grapples with that dilemma in “Sex, Lies and Helicopters.” She sees Carl (Reno Wilson) slipping out of Victoria’s (Katy Mixon) room at a very late hour, prompting her to jump to conclusions and to debate whether to tell Mike (Billy Gardell).

9 p.m. on HBO, Movie: “Captivated: The Trials of Pamela Smart” — When 22-year-old Pamela Smart stood trial 23 years ago for plotting the murder of her husband, Gregory, the case — which became the first fully televised, gavel-to-gavel court trial — helped set the stage for reality TV. Jeremiah Zagar’s documentary incorporates new interviews with Smart, who was convicted, and others close to the case to explore how the exhaustive coverage affected the eventual sentencing.

11 p.m. on 7, “POV” — What is it like to live one’s entire life as a refugee? The subjects of the new documentary “A World Not Ours” can answer the question. So can its director, Mahdi Fleifel, who was raised in a Lebanese camp for Palestinian exiles. Thought to be temporary when it was opened in 1948, it remains the home of 70,000 today — and Fleifel’s portrait of it reflects his fond memories of his own upbringing there, as well as the anxieties of its current residents.