What To Watch Sunday: I Love LA Finale, The Road Winner Revealed, CBS Remembers Rob Reiner, And More - TVLine

Kenny Laubbacher/HBO

Every day, TVLine’s What to Watch column spotlights new and returning English-language shows (and select movies) premiering or airing fresh episodes across broadcast, cable and streaming — organized below by release time and alphabetically within each slot.

On TV this Sunday: “I Love LA” wraps Season 1, a winner conquers “The Road,” and CBS honors the late Rob Reiner.

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Showtimes for December 21, 2025

3:00 AM
ET

Landman

Paramount+

Tommy negotiates a risky offshore drilling deal while tensions rise with Cami.

Mayor of Kingstown

Paramount+
PENULTIMATE EPISODE

After tragedy strikes close to home, Mike risks everything to save his brother; inside the prison, tensions reach a breaking point.

7:00 PM
ET

Christmas With the Knightlys

UPTV
MOVIE PREMIERE

A teacher (Celeste Desjardins) agrees to pose as a billionaire’s son’s girlfriend (Joe Scarpellino) in exchange for a new community center for her students.

8:00 PM
ET

The Christmas Baby

Hallmark Channel
MOVIE PREMIERE

A couple (Ali Liebert and Katherine Barrell) caring for an abandoned baby at Christmas considers adoption while balancing new love and careers.

Happiness

PBS
TWO EPISODES

Charlie champions Gloria’s vision, despite Adrian’s resistance, which leads the ensemble to look to Charlie as the new director; Jacqui’s jealousy stirs conflict.

Mario Lopez Presents: Chasing Christmas

Great American Family
MOVIE PREMIERE

A morning show host (Trevor Donovan) and an artist (Jillian Murray) race across Buffalo with their kids to find the season’s hottest toy, discovering love and family along the way.

Universal Basic Guys

Fox
SPECIAL TIME

Mark buys a jetpack; David wants to serve omakase at a soup kitchen.

8:30 PM
ET

2025 Fox Winter Preview

Fox

Jenny McCarthy gives viewers an inside look at the network’s upcoming fare including gripping dramas like “Memory of a Killer” and “Best Medicine,” plus “The Masked Singer,” the reimagined “Fear Factor,” “Next Level Chef,” “Animal Control,” and “Going Dutch.”

Rob Reiner: Scenes From a Life

CBS
ONE HOUR

Celebrate the late actor/director’s life and work through the eyes of those who knew him, including Kathy Bates, Annette Bening, Albert Brooks, Michael Douglas, Kiefer Sutherland, Jerry O’Connell, and Mandy Patinkin.

9:00 PM
ET

Robin Hood

MGM+
PENULTIMATE EPISODE

In response to Henry’s death, Rob burns Warick’s manor and kills Warick, driving Tuck away; Prince John uncovers Marian’s spying, forcing her to flee with news that the King has sent Guy of Gisborne to kill Rob.

9:30 PM
ET

The Road

CBS

Season 1 finale: Everything is at stake for the final three as they open for Keith Urban one last time; the winning musician is revealed.

10:00 PM
ET

Words + Music

MGM+

Season 1 finale: Alanis Morissette performs hits and new works, reflecting on healing, anger, and art as immersive visuals mirror her music and spiritual journey.

10:30 PM
ET

I Love LA

HBO

Season 1 finale: The girls return to New York for an exclusive fashion event; Tallulah contends with some questionable styling decisions.

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What To Watch Sunday: I Love LA Finale, The Road Winner Revealed, CBS Remembers Rob Reiner, And More – TVLine