The NBC sketch comedy show also bumped three of its featured players to main cast members.
Kelce and the Chiefs will be facing off against the Baltimore Ravens.
Cook first made an appearance on the PBS reality renovation series in 1982.
Fans are about to get a little happier.
She deemed the warm welcome she received on The Tonight Show "so, so good."
Winfrey couldn't believe Rivers uttered the words on national television.
The Sister Act star teased that she'll "probably send an email."
The Big Bang Theory prequel wrapped its seventh and final season last week.
Barrymore was only seven years old at the time.
De Niro was host Jimmy Fallon's other guest of the night.
You're favorite Tonight Show clip from Fallon's run is probably in this special... unless you liked the monologue or interviews.
Hathaway was stunned nobody in the audience had read the book that inspired her new film, The Idea of You.
"I love Kelly Clarkson," O'Brien clarified.
The former host will appear as a guest on Tuesday night's episode.
Despite the tension, Seinfeld told Jimmy Fallon, "I love Hugh Grant so much."
The two took a trip down memory lane on The Tonight Show.
"It's such a beautiful thing to be able to join two people in holy matrimony."
Murphy just secured a significant stamp of approval.