Actress Cher; actress Christine Baranski; actor Rupert Everett; actress Natalie Dormer.

Actress Sandra Bullock; actress Cate Blanchett; actress Helena Bonham-Carter; Years & Years performs their new single "If You're Over Me."

Olympic athlete Usain Bolt; actor Channing Tatum; actress Jennifer Saunders; actress Beattie Edmondson; actor Rob Brydon; Florence + the Machine perform.

Actor Ethan Hawke ("First Reformed"); actress Toni Collette ("Hereditary"); "Poldark" star Aidan Turner headlines the West End production of "The Lieutenant of Inishmore"; comic-writer Jo Brand ("The More You Ignore Me"); singer Liam Payne.

Actors Chris Pratt, Bryce Dallas Howard and Jeff Goldblum ("Jurassic World: Fallen Kingdom"); singer Jake Shears performs.

Actress Emilia Clarke; singer Gloria Estefan; actress Miriam Margolyes; Leon Bridges performs.

Celebrity guests discuss their current projects and the latest gossip hitting newstands.

Actors Benedict Cumberbatch, Matt LeBlanc and Maxine Peake; Calvin Harris and Dua Lipa perform their song "One Kiss."

Actors Dwayne Johnson and Naomie Harris ("Rampage"); actor Martin Freeman ("Ghost Stories"); singer Roger Daltrey performs.

Actors Emily Blunt and John Krasinski ("A Quiet Place"); actor Tom Holland ("Avengers: Infinity War"); singer Kylie Minogue performs.

Celebrity guests discuss their current projects and the latest gossip hitting newstands.

Celebrity guests discuss their current projects and the latest gossip hitting newstands.

Graham Norton presents his very own guide on how to be a good guest; actor Ricky Gervais, actress Miriam Margolyes; actress Julie Walters.

Actress Margot Robbie; actress Allison Janney; actor Daniel Kaluuya; actress Alicia Vikander; Camila Cabello performs.

Actor Will Smith; actress Jenna Coleman; chef Jamie Oliver; Tom Chaplin performs.

Actress Saoirse Ronan; actors Eric McCormack and Debra Messing; comic Rob Beckett; singer Keala Settle.

Guests include musician, entrepreneur and `Voice' judge will.i.am; stage and screen actor Imelda Staunton, starring in the new romantic comedy "Finding Your Feet"; musical guest George Ezra performs "Paradise".

Guests include Hollywood star Tom Cruise and his `Mission: Impossible 6' co-stars Henry Cavill, Rebecca Ferguson and British actor and writer Simon Pegg; music and chat from Paloma Faith, who performs "Til I'm Done".

Actress Helen Mirren; actor Liam Neeson; actor Jamie Dornan; Sigrid performs.

Actor Tom Hanks; boxer Anthony Joshua; actress Maisie Williams; First Aid Kit performs.

A preview of the show.

Heeeere's Conan! The former longtime host of "Late Night" and abbreviated presenter of "The Tonight Show" moves his talk show act to the cable arena, where he becomes the staple of TBS' late-night talk show lineup that began a year earlier with the premiere of "Lopez Tonight." Making the transition to basic cable with Conan is his on-again, off-again sidekick/announcer, Andy Richter. Said O'Brien in his typical dry tone, "In three months I've gone from network television to Twitter to performing live in theaters, and now I'm headed to basic cable. My plan is working perfectly."

Grammy and Emmy winner Harry Connick Jr. enters the daytime genre with this lighthearted show that puts the focus on family-friendly entertainment rather than the conflict-driven topics of other daytime fare. Connick's stated goal is to "bring the party back to daytime" through a format reminiscent of popular variety shows of yesteryear. Regular segments on "Harry" include man-on-the-street interviews, stunts, audience participation and -- of course -- musical performances, because you can't have a Harry Connick Jr.-hosted show without music. The hour-long series includes a hefty dose of comedy, with brothers Justin and Eric Stangel among the executive producers -- a position they previously held on "Late Show With David Letterman."

An extension of Bravo's "Watch What Happens" reunion specials and the original live online shows, this interactive series -- live on the East Coast -- is hosted by former Bravo programming executive Andy Cohen, who welcomes guests from some of the cable network's most popular series, as well as other entertainment stars, to chat about pop culture and celebrities in the news. In 2017, the show took on a new title -- "Watch What Happens Live With Andy Cohen" -- as part of an overhaul that included a remodeled studio offering a designated performance space for musical guests, a staple of most late-night shows.

Emmy-winning funnyman Jimmy Kimmel serves up comedy bits and welcomes guests that include other comics, celebrities, athletes and musicians, as well as everyday people with unusual or compelling personal stories. Kimmel's family and friends take part in the festivities, including his Cousin Sal, Uncle Frank (until his death in 2011) and childhood friend Cleto Escobedo III, who leads the show's house band. Recurring segments include the FCC-pleasing This Week in Unnecessary Censorship in which they take TV clips and "bleep and blur things whether they need it or not," as Kimmel describes it. But it's too bad they consistently run out of time for Matt Damon's segment.

Hailing from Rockefeller Center in the heart of New York City, Jimmy has made it his mission to make sure viewers end the day with a smile. Each weeknight, he hosts A-list guests, from movie stars to athletes, comedians, public figures and everyone in between. He also delivers a signature nightly monologue, performs in topical comedy sketches, plays fan-favorite games, and presents recurring segments like Thank You Notes. Today's popular musical guests also stop by to perform alongside house band The Roots.

Improv actor and comic Stephen Colbert flexes the hosting muscles he honed over nearly 1,500 episodes of the popular and critically celebrated "The Colbert Report" at the helm of this long-running late-night talk show. Following the genre's classic formula, each show kicks off with a monologue and a look at recent headlines, and features sketch comedy, celebrity interviews and musical performances. Joining Colbert is his bandleader, Julliard-trained Jon Batiste, and house band Stay Human. The show is filmed in New York's famed Ed Sullivan Theater, the longtime home of "The Late Show."