Celebrity·Posted on Dec 18, 2013The 24 Most Magical Musical Moments On Jimmy Fallon's "Late Night" In 2013Need a dose of pure joy and laughter? Fallon's got you covered.by Summer Anne BurtonBuzzFeed StaffLinkFacebookPinterestTwitterMail 24. Freestyle rapping with Alison Brie View this video on YouTube youtube.com Tap to play GIF Tap to play GIF 23. Drunk Ron Weasley (Simon Pegg) sings Happy Birthday to Harry Potter View this video on YouTube youtube.com This is not the future Mr. Weasley that J.K. Rowling promised us. 22. Summer Camp Singalong with Justin Timberlake View this video on YouTube youtube.com Who didn't go through an "Africa" by Toto stage in middle school? 21. Slow jam the news with Chris Christie View this video on YouTube youtube.com He might be even better at this than Barack Obama. 20. All-Clucking "Some Nights" with Amy Poehler and Michael Buble View this video on YouTube youtube.com Poehler steals the show, obvi. 19. Broadway versions of rap songs with Ariana Grande View this video on YouTube youtube.com OK, well, this is just super charming. 18. "Blurred Lines" with Robin Thicke and The Roots View this video on YouTube youtube.com I thought I never wanted to hear this song again, but this changed my mind. 17. "SexyBack" with Justin Timberlake and the Ragtime Gals View this video on YouTube youtube.com The one in the middle is pretty fine. 16. Freestyle dance with Rebel Wilson View this video on YouTube youtube.com Tap to play GIF Tap to play GIF 15. "Straight Outta Compton" supercut with Brian Williams View this video on YouTube youtube.com This would only be better if it was "real." 14. Nick Offerman break dances View this video on YouTube youtube.com Tap to play GIF Tap to play GIF 13. Improv dance with Sam Rockwell View this video on YouTube youtube.com <3 <3 <3 <3 <3 12. "Balls In Your Mouth" with Brad Paisley View this video on YouTube youtube.com This may have actually redeemed "Accidental Racist" a little bit. 11. All-Clucking "Ho-Hey" with the Chickineers (Blake Shelton, Nick Offerman, Jimmy Fallon) View this video on YouTube youtube.com It fits somehow. 10. Three Michael McDonalds Sing "Row, Row, Row Your Boat" with Justin Timberlake and Michael McDonald View this video on YouTube youtube.com Can you find the real Michael Mcdonald?! 9. Rooftop yodeling with Brad Pitt View this video on YouTube youtube.com Tap to play GIF Tap to play GIF 8. Black Simon and Garfunkel sing Katy Perry's "Roar" View this video on YouTube youtube.com Definitely better than the original. 7. Thanksgiving medley with Rashida Jones and Carrie Underwood View this video on YouTube youtube.com Tap to play GIF Tap to play GIF 6. "Mario Kart Love Song" with Selena Gomez View this video on YouTube youtube.com OK, this is just cute. 5. Evolution of End Zone Dancing with Justin Timberlake View this video on YouTube youtube.com Tap to play GIF Tap to play GIF 4. "Sesame Street" with Muppets and The Roots View this video on YouTube youtube.com My heart has exploded. 3. Lip sync battle with Joseph Gordon Levitt and Stephen Merchant. View this video on YouTube youtube.com Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF 2. "We Can't Stop" with Miley Cyrus and The Roots View this video on YouTube youtube.com Falling in love with this song all over again. 1. Evolution of Mom Dancing with Michelle Obama View this video on YouTube youtube.com Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF