Dancer and actor Pressley Hosbach talks about her time on "Dance Moms" and "Stage Fright."

Actors Matthew McConaughey and Nick Kroll talk about the inspiration behind "Sing 2."

"Glee" star Chris Colfer answers questions; spelling bee champion Zaila Avant-garde gets a surprise.

Miranda Cosgrove of "iCarly," actor Matt Damon and Twitch superstar Ninja join the show.

YouTube star Nastya and online looping genius Marc Rebillet join the Pajama Party episode.

"Saturday Night Live" legend and "Kenan" star Kenan Thompson on his favorite impressions.

Olympic skateboarding champ Bryce Wettstein answers a jaw-dropping question from a surprise guest.

"Annie Live!" stars Celina Smith and Tituss Burgess join the show to talk about their new musical.

Yo-yo world champion Gentry Stein shows off his awesome tricks and plays a game of Velcro Madness.

Singer-songwriter Meghan Trainor plays a game and shares her favorite vacation memories.

Astronaut Mike Massimino talks about what it's like being in space and plays a game of Globe Grab.

"Grownish" star Yara Shahidi talks about her karate skills; a hilarious game of history trivia.

"Frozen" actor Kristen Bell talks about her new book and shows off her weirdest talent.

Dan White stops by and performs some unforgettable magic tricks; one of the hosts gets cut in half.

Charli and Dixie D'Amelio join the show and reveal the best and worst parts of working together.

"NBC Nightly News" anchor Lester Holt joins the show and shares funny stories and news tips.

Online creators and pranksters AMP World join the show for an epic games episode.

The Tonight Show's house band members Questlove and Black Thought reminisce about how they met.

Dancer and actress JoJo Siwa joins the show and plays hilarious house games.

Jimmy Fallon joins the inaugural episode and gives the kids tips on hosting a talk show.