1. When the opening credits, directed by Spike Lee, were broadcast for the very first time.
2. When Jimmy and Will Smith threw back to The "Carlton."
3. When Harry Styles dropped by...
...and he told us all of his most intimate secrets.
4. When Robert DeNiro, Tina Fey, Joe Namath, Rudy Giuliani, Mariah Carey, Tracy Morgan, Joan Rivers, Kim Kardashian, Seth Rogen, Lindsay Lohan, Sarah Jessica Parker, Mike Tyson, and Stephen Colbert all gave Jimmy the $100 they owed him.
5. Oh, Lady Gaga showed up too...
...and she performed like only Lady Gaga can perform.
6. When First Lady Michelle Obama talked about Malia turning 16 years old and learning to drive.
7. When Will Ferrell made out with a poster of Harry Styles...
8. ...and then made "shy face" between Jimmy and the first lady.
The first lady also explained to Sara and Stacy why exercise is not "Ew."
9. When Jerry Seinfeld did an impression of Jimmy doing an impression of Jerry, and neither could stop laughing.
10. When Martin Scorsese gave his two cents about #Hashtag2.
11. When The Ragtime Gals remixed "Ignition (Remix)."
12. When the series' first game of charades proved to be quite a challenge for Bradley Cooper, Tim McGraw, and Emma Thompson.
13. When Kathy Lee Gifford crashed Brian Williams' and Lester Holt's rendition of "Rapper's Delight."
14. When U2 performed on top of Rockefeller Center, and New York decided to have the most epic sunset ever.
15. And of course, when Jimmy and JT pulled out mics from underneath the desk...
...and history (of rap) was made again.
Yes, things got aggressive during, "Move B*#%@ (Get Out the Way)"...
...but they didn't stay out of sync for too long.
