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By Sierra Marquina

Jimmy Fallon is finally officially taking over The Tonight Show Starring Jimmy Fallon tonight and he couldn’t be more excited–or nervous!

Being likely the biggest night of his career, Jimmy revealed to On Air with Ryan Seacrest the moment didn’t hit him that he’d be taking over Jay Leno‘s spot until he realized he’ll be joining the elite list of icons who’ve hosted the show previously.

Jimmy shares: "You see all the other hosts who've come before and that's when it kind of kicked in that this is real. I mean, those guys are legends and just to be on that's just very surreal."

We don’t think they could have picked a better guy!

Catch the premiere of The Tonight Show Starring Jimmy Fallon tonight on NBC at 12/11c.