1. When he came out from behind the curtain and looked simultaneously excited and nervous.
2. When he talked about being a proud dad.
3. And speaking of proud parents, Fallon's were also in the audience.
4. And his dad proudly heckled him.
No, that is not Carl from Up.
5. When Fallon looked to his left and saw the comforting sight of The Roots.
Including Questlove's amazing "I <3 NY" bow tie.
6. That sentimental moment with his longtime sidekick Steve Higgins.
7. And when he got a little verklempt thinking of a young kid looking up to him like he once did with Johnny Carson.
8. When he redid the intro so that he could start his monologue for real.
9. When he sat behind his Tonight Show desk for the first time and talked about Spike Lee directing the show's opening.
10. And when he got to stick it to those who didn't believe in him.
11. Like Robert DeNiro.
12. And Tina Fey.
13. And Joe Namath.
14. And Rudy Giuliani.
15. And Mariah Carey.
And Mariah Carey's underboob cleavage.
16. And Tracy Morgan.
17. And Joan Rivers.
18. And Kim Kardashian.
19. And Seth Rogen.
20. And Lindsay Lohan.
21. And Sarah Jessica Parker.
Who gave him her definitely $100-plus shoes instead.
22. And Mike Tyson.
And Mike Tyson's face tattoo.
23. And Lady Gaga.
Who will appear on Fallon's second show on Tuesday, Feb. 18.
24. And Stephen Colbert.
The man is now $1,400 richer!
25. When he and Will Smith wore matching overalls, geometric print T-shirts, and chains.
26. And taught us how to Dougie.
27. And did the Carlton!
Which could've used some Alfonso Ribiero, TBH.
28. When he talked about how hard it was to do all that dancing.
29. When they reminisced about Fallon's performance of Willow Smith's "Whip My Hair" as Neil Young and re-created the chorus.
30. And Fallon revealed that Willow really liked the performance too.
31. When Will Smith did this curling impression.
32. When Fallon gave this Smiths T-shirt a makeover.
33. When he got really excited about his musical guest from the Top of the Rock.
34. And when U2 made his dreams come true by doing an acoustic performance.
The band sang their Oscar-nominated song "Ordinary Love" from Mandela: Long Walk to Freedom.