Jon Stewart returns to TV to host the biennial “Night of Too Many Stars: America Unites for Autism” (HBO, 8 p.m.) from Madison square Garden, a telethon that usually has some pretty good comedy bits. His old colleagues Stephen Colbert, Jordan Klepper and John Oliver, who have each moved on to host their own shows, take part, as do Abbi Jacobson, Chris Rock, Olivia Munn, Ellie Kemper, John Mulaney, Robert De Niro, J.J. Abrams, Rob Corddry, Ben Stiller, Robert Smigel, Adam Sandler and Hasan Minaj. It repeats again at 9:30 and 11.
Not long after her own two part documentary here is the Lifetime movie version, “I Am Elizabeth Smart” (Lifetime, 8 p.m.), starring Alana Boden as the kidnapped 14 year old, and Smart herself narrating.
The recent world tour by the reigning married country music couple Tim McGraw and Faith Hill is recounted in the documentary “Tim & Faith: Soul2Soul” (Showtime 2, 9 p.m.). Despite its title, it does not include the 80s British group Soul 2 Soul with Jazzie B and Caron Wheeler.
The crime that launched Truman Capote’s career gets a deeper look in “Cold Blooded: the Clutter Family Murders” (Sundance, 9 p.m.), a two part documentary.
College football on prime time network TV tonight has UCLA at Southern California (ABC, 8 p.m.) and California at Stanford (Fox, 8 p.m.).
Another new original Yuletide film comes before Thanksgiving with “Coming Home for Christmas” (Hallmark, 8 p.m.), a family gathers one last time to celebrate before the estate is sold. Danica McKellar and Neal Bledsoe star.
Emile Hirsch and Brian Cox star in the supernatural horror film “The Autopsy of Jane Doe” (Showtime, 9 p.m.), directed by André Øvredal, making its premium cable debut.
A woman learns she’s a kidney donor match for her new girlfriend on “We the Dreamers” (Fuse, 10 p.m.).
A three day old kitten gets help from “Dr. Jeff: Rocky Mountain Vet” (Animal Planet, 9 p.m.).
Villains converge on “Dirk Gently’s Holistic Detective Agency” (BBC America, 9 p.m.).
There’s a three hour Thanksgiving episode of “Alaska: The Last Frontier” (Discovery, 8 p.m.) that’s as long as “Live P.D.” (A&E, 9 p.m.).
“Iyanla: Fix My Life” (OWN, 9 p.m.) keeps working with four recently sprung ex-cons. More post-prison problems come on “Released” (OWN, 10 p.m.).
“The Billionaire Boys Club” is cited as an influence on “CopyCat Killers” (Reelz, 10 p.m.).
A super volcano lurks beneath Naples, Italy on “Secrets of the Underground” (Science, 10 p.m.).
The Dating Game Killer doesn’t ring a bell, but he’s the focus of “Murder Made Me Famous” (Reelz, 9 p.m.).
“Cake Boss” (TLC, 8 p.m.) makes something for the camel and ostrich races.
It’s an overweight cat vs. a Maltese-poodle mix on “Cat Vs. Dog” (Animal Planet, 10 p.m.).
Hugh Grant, Jason Mamoa, Sarah Millican and Kelly Clarkson are on “The Graham Norton Show” (BBC America, 10 p.m.).
“The Wizard of Oz” (TBS, 7, 9:15 p.m.) is on a couple of times tonight.
Grace Kelly gets the spotlight tonight on Turner Classic Movies with “Rear Window” (8 p.m.), “High Society” (10:15 p.m.) and “Green Fire” (12:15 a.m.). She’s definitely not in “Black Mama, White Mama” (TCM, 2 a.m.),which is paired with another Pam Grier classic, “Hit Man” (TCM, 3:45 a.m.).
Football today includes Chicago at Pittsburgh (NHL, 7 p.m.).
College football begins at noon with games that include Virginia at Miami (ABC), Michigan at Wisconsin (Fox), Louisiana Monroe at Auburn (ESPN2), TCU at Texas Tech (Fox Sports 1) Central Florida at Temple (ESPNU), Mississippi State at Arkansas (CBS), SMU at Memphis (ESPNews), Texas at West Virginia (ESPN) and Cincinnati at East Carolina (CBS Sports).
Games at 3:30 p.m. include Navy at Notre Dame (NBC), Oklahoma at Kansas (ESPN), Kentucky at Georgia (CBS), Illinois at Ohio State (ABC), Kansas State at Oklahoma State (ESPN2), Syracuse at Louisville (ESPNU) and San Jose State at Colorado State (CBS Sports). Then comes Maryland at Michigan State (Fox, 4 p.m.), Nebraska at Penn State (Fox Sports 1, 4 p.m.), Houston at Tulane (ESPNews, 4 0.m.), LSU at Tennessee (ESPN, 7 p.m.), Texas A&M at Mississippi (ESPN2, 7 p.m.), Boston College vs. UConn (CBS Sports, 7 p.m.), N.C. State at Wake Forest (ESPNU, 7:30 p.m.), Air Force at Boise State (ESPN2, 10:15 p.m.), Utah at Washington (ESPN, 10:30 p.m.) and Nevada at San Diego State (CBS Sports, 10:30 p.m.).
Men’s college basketball includes Furman at Butler (Fox Sports 2, 2 p.m.), NJIT at Seton Hall (Fox Sports 2, 4 p.m.) and Hartford at LIU Brooklyn (CBS Sports, 6 p.m.).
NASCAR’s Ford EcoBoost 300 (NBC Sports, 3:30 p.m.) is run.
Highlights from the 2017 Americana Music Festval are on “Austin City Limits” (PBS, 11 p.m., check local listings), with performances from Van Morrison, Jason Isbell, Margo Price, Graham Nash, Robert Cray and John Prine.
It’s the most hip hop episode of “Saturday Night Live” (NBC, 11:30 p.m.) yet, with Chance the Rapper hosting a new episode, where Eminem is musical guest.