TheWrap has compiled a list of the 12 biggest and best viral videos from late-night TV in 2017. There were some tear-filled monologues, the best "Carpool Karaoke" segments of the year, plenty of Kardashian cameos, and enough Trump commentary to last us a lifetime. (Click the links in the captions to watch each video.)
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"Jimmy Kimmel Live": Jimmy Kimmel Reveals Details of His Son’s Birth & Heart Disease -- The monologue the host gave just a few days after his son Billy was born may have been one of the most powerful openers in the history of late-night TV. Kimmel addressed his newborn baby's heart disease and called for health care reform in a clip that has been trending ever since.
Also Read: Jimmy Kimmel Brings Son Billy Out for Emotional Monologue Endorsing CHIP (Video)
"The Late Late Show with James Corden": Harry Styles "Carpool Karaoke" -- The only thing better than regular "Carpool Karaoke" is "Carpool Karaoke" featuring another British guy who is just as quirky and adorable as James Corden.
Also Read: Harry Styles Filled in for James Corden so CBS Host Could Become a Dad (Video)
"Jimmy Kimmel Live": Guest Host Jennifer Lawrence Interviews Kim Kardashian West -- J. Law took over hosting duties for Jimmy Kimmel and used the opportunity to do an 18-minute interview with her favorite person in the world: Kim Kardashian West.
Also Read: Jennifer Lawrence Actually Slayed Her ‘Jimmy Kimmel Live’ Monologue (Video)
"Late Show with Stephen Colbert": Andy Serkis Becomes Gollum To Read Trump's Tweets -- Colbert was right, they do sound better that way.
Also Read: Trump Parody Show From Stephen Colbert to Launch on Showtime Early Next Year (Video)
"Tonight Show Starring Jimmy Fallon": Millie Bobby Brown Raps a "Stranger Things" Season 1 recap -- Yes, Eleven can rap. And yes, this may have been all you needed to prepare you for "Stranger Things 2."
Also Read: 13 Biggest TV Cliffhangers of 2017, From ‘Riverdale’ to ‘Stranger Things’ (Photos)
"Late Night with Seth Meyers": Trump, "Alternative Facts" and the Women's March: A Closer Look -- Remember when Kellyanne Conway taught us what "alternative facts" were? Seth Meyers' take on Conway's bizarre term was one of the best.
Also Read: Seth Meyers Dubs Matt Lauer the Real ‘Dildo at Work’ in a ‘Closer Look’ (Video)
"Late Show with Stephen Colbert": This Monologue Goes Out to You, Mr. President -- "Face the Nation"s John Dickerson took President Trump's insults in stride during their sit down at the White House. Stephen Colbert did him the courtesy of saying everything Dickerson had the willpower to keep inside.
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"The Late Late Show with James Corden": Spill Your Guts or Fill Your Guts with Khloe Kardashian -- Getting a member of the Kardashian clan to talk about themselves isn't hard. But making them answer deeply personal questions is another story, unless the alternative is eating something truly disgusting.
Also Read: Corden Tells Kim Kardashian Who Is His Least-Favorite Jenner: ‘F— Her, She’s the Worst’ (Video)
"Late Night with Seth Meyers": Trump's Response to Charlottesville: A Closer Look -- Addressing the events of the neo-Nazi rally over the summer was no joke for late night, and Meyers used his platform to call out Trump for his response (or lack thereof) to the violence.
"Conan": Bill Skarsgård's Demonic “IT" Smile -- We get it, Skarsgård. You are really scary.
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"Tonight Show Starring Jimmy Fallon": Miley Cyrus Busks in NYC Subway in Disguise -- Miley Cyrus and Jimmy Fallon are legit best friends, so it's getting harder and harder for him to outdo the last fun thing they did when she turns up on his show. But dressing up to perform in the subway incognito? Yeah, that'll do it.
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"Conan": Conan Works Out with Wonder Woman Gal Gadot -- Conan O'Brien tries to prove he's just as tough as Wonder Woman. Spoiler alert: He's not.
Also Read: Wonder Woman Indeed: Gal Gadot Tops IMDb’s Top 10 Stars of the Year
2017 was definitely a great year for late-night TV, so it's going to be pretty tough for 2018 to fill its shoes. Then again, we think we said that about 2016.
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