I could live the rest of my life without seeing “Boston Rob” Mariano on another CBS reality competition show — he’s been on six so far and four of them were on “Survivor” (CBS, 8 p.m.). He returns there tonight for his seventh stint, in a mentor role on the 39th season, subtitled “Island of the Idols.” He’s advises one tribe; two-time winner Sandra Diaz-Twine, mentors the other. For the seventh time, it’s shot in Fiji; as always, Jeff Probst hosts. Among the contestants are former NHL player Tom Laidlaw, Olympic swimmer Elizabeth Beisel and a professional poker player.
The premiere is followed by the finale of “Big Brother” (CBS, 8 p.m.) where Nicole holds the slimmest chance of beating the showmance she should have broken up weeks ago.
A finale also comes for “Country Music” (PBS, 8 p.m.) with a look at country artists in the 80s and 90s, from Randy Travis and George Strait to the Judds and Garth Brooks – with a coda about Johnny Cash’s last work.
The eleventh and final season of “Modern Family” (ABC, 9 p.m.) begins with Haley busy raising her twins.
The Windy City is back in action, with “Chicago Med” (NBC, 8 p.m.) dealing with a car accident in the fifth season premiere, “Chicago Fire” (NBC, 9 p.m.) battles a mattress factory blaze in its eighth season premiere and “Chicago P.D.” (NBC, 10 p.m.) there’s a lot of problems between the department and the mayor in the seventh season premiere.
On the second season premiere of “Single Parents” (ABC, 9:30 p.m.), kids are still at summer camp.
“The Goldbergs” (ABC, 8 p.m.) go to Disneyland on the season seven premiere.
If you’re not already sick of “The Masked Singer” (Fox, 8 p.m.) from the incessant plugs during the Emmys, here comes the second season, with fanciful costumes and hidden celebrities some of whom may actually be recognizable.
“It’s Always Sunny in Philadelphia” (FXX, 10 p.m.) starts its 14th season, now accompanied by a new sketch comedy and animation show, “Cake” (FXX, 10:30 p.m.).r
Lainey begins a new year on “Schooled” (ABC, 8:30 p.m.) in its second season premiere.
On the series finale of “Suits” (USA, 9 p.m.), the partners do everything they can to save the firm.
Not seen since its first season ran in 2017, “Abstract: The Art of Design” (Netflix, streaming) is back for a second, showcasing some of the world’s leading designers.
The documentary “Birders” (Netflix, streaming) looks at bird watchers along the U.S.-Mexico border and their worries about protecting species.
The documentary “Buzz” (HBO, 9 p.m.) looks at the reporter H.G. “Buzz” Kissinger, the “Friday Night Lights” author who, after profiling Caitlyn Jenner, begins to question his own identity.
Lights go out at the campsite on “American Horror Story: 1984” (FX, 10 p.m.).
“The Real Housewives of Dallas” (Bravo, 9 p.m.) continue their visit to Mexico.
Impeachment may be a topic covered on “Full Frontal with Samantha Bee” (TBS, 10:30 p.m.).
Tracy Morgan, Adam Carolla and Aubrey Plaza are among those providing voices on a new edition of “Crank Yankers” (Comedy Central, 10:30 p.m.).
“Guy’s Grocery Games” (Food, 9 p.m.) begins a new season.
There’s a sports-themed “Hypnotize Me” (CW, 9 p.m.).
Turner Classic Movies’ celebration of the 100th anniversary of United Artists concludes with its films in the 70s and 80s all day: “The Last Metro” (6 a.m.), “Being There” (8:15 a.m.), “The Great Train Robbery” (10:30 a.m.), “Fiddler on the Roof” (12:30 p.m.), “Hair” (3:45 p.m.), “La Cage Aux Folles” (6 p.m.), “Rain Man” (8 p.m.), “The Long Goodbye” (10:30 p.m.), “Raging Bull” (12:30 a.m.), “Coming Home” (3 a.m.) and “The Landlord” (5:15 a.m.).
Baseball includes Yankees at Tampa Bay (ESPN, 7 p.m.) and Oakland at Angels (ESPN, 10 p.m.).
In golf, there is first round play late tonight in the Asia-Pacific Amateur Championship (ESPN2, 1 a.m.).
Women’s college volleyball includes West Virginia at Texas Tech (ESPNU, 7 p.m.), Michigan State at Penn State (Fox Sports 1, 8 p.m.) and TCU at Oklahoma (ESPNU, 9 p.m.).
Daytime Talk
Kelly Ripa and Ryan Seacrest: Cobie Smulders, Liza Koshy. The View: Mark Kelly. The Talk: Kirsten Dunst, Paris Hilton. Ellen DeGeneres: Ken Jeong, Monsta X. Kelly Clarkson: Kate Upton, Arianna Huffington. Wendy Williams: Nick Cannon. The Real: Rico Rodriguez, Amanda Seales.
Late Night
Stephen Colbert: Renee Zellweger, Walton Goggins. Jimmy Kimmel: Joe Biden, Cobie Smulders, James Blake. Jimmy Fallon: Robert De Niro, Jameela Jamil, Bastille. Seth Meyers: Anna Kendrick, Kal Penn, Edi Patterson. James Corden: Ashley Tisdale, Taran Killam, Cherry Glazerr. Lilly Singh: Anna Faris. Trevor Noah: Nick Cannon. David Spade: Greg Fitzsimmons, Annie Lederman, Bill Engvall. Conan O’Brien: Gary Gulman.