WATCH: The Best of Jimmy Fallon's 'Tonight Show' debut!

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Jimmy Fallon officially kicked off the new "Tonight Show," and what a show it was!

Jimmy had some amazing guests on the show from Will Smith to Lady Gaga to Stephen Colbert. Check out the best moments from the show's debut:

1. "Evolution of Hip-Hop Dancing" (with Jimmy Fallon & Will Smith)

2. His opening monologue

3. "Tonight Show" Superlatives: Sochi Winter Olympics

4. Jimmy's $100 "Tonight Show" bet w/Lady Gaga, Tina Fey, Mariah Carey, Kim Kardashian, Seth Rogan, Lindsay Lohan, Sarah Jessica Parker, and more

5. U2's incredible rooftop performance


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