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.)
"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.
"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.
"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.
"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.
"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.
"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.