You have a lot of upcoming things.

-So many things to get through, I know.

-No, I'm excited. I, first of all,

just want to talk about "Little Shop of Horrors."

-Yes! Yes. -That's one of my favorite --

[ Cheers and applause ]

Now, what's going -- What's happening with this?

This is happening soon, right?

-It's happening September 17th, off Broadway,

at the Westside Theatre, a tiny little 270-seat theater.

-Yeah, that's fantastic.

-And today, was our second day of rehearsal.

And I was singing with a plant puppet.

-I know. -Yeah.

-I'm freaking out. -Like, "Feed me."

-Yes! -Yeah.

-That's one of my favorite jams. I love "Little --"

I'm freaking out. -I know, I can't wait.

I can't wait. Michael Mayer, who directed "Spring Awakening,"

is our director of it. He's amazing.

-Wait. That -- I think that's the first time

I'd ever seen you, "Spring Awakening."

-Yeah. Yeah, exactly. -No way. Isn't that fun?

-Yeah. -So, you get to work

with him again, too, but -- -It's so exciting.

-I don't -- I don't want any spoilers.

-You gotta come. Please come.

-No, I'm going to. I'm bringing these guys.

How many seats? -Everyone gets --

[ Cheers and applause ]

I think there might be more people in this audience

than there are in the Westside Theatre.

-It's all right. Don't worry about it.

We'll go twice, and we'll alternate.

[ Laughs ] Is there an intermission?

-Just accidentally give them free tickets.

-Yeah, exactly. Give each other tickets on the way out.

[ Laughter ] I can't wait for that.

Gosh, you know, Jonathan Groff.

I don't know if anyone saw "Hamilton"

when he was the king, but that's...

[ Cheers and applause ]

You were amazing in that, as well, so just to see you

return to the stage, I'll be very excited.

And then, the stage and then the screen.

The silver screen. -Yes. [ Laughing ]

-The Great White Way and the silver screen.

-Yeah, exactly, and the silver screen.

-The silver screen. You're gonna be in "Frozen 2."

-Yes. -And this is --

[ Cheers and applause ]

I mean, how fun is life? I mean, right now?

I mean, you're just crushing it.

That's great. -It's pretty good.

-My kids -- I mean, "Frozen," obviously,

it's the biggest movie of all time.

Every kid in the world knows that movie.

-Yeah, yeah, yeah. -Do people --

Do they recognize you on the street or stop you,

or when you talk? -Okay.

So, actually I wanted to talk to you about this,

because I make voice memos for little kids.

It's hard when you meet a kid to say,

"I'm Kristoff in 'Frozen.'"

They're like, "You're not blond. You're not a cartoon.

I don't know who you're talking about."

-Yeah. [ Laughter ]

-But then I make these little voice memos on my phone,

and I'd love to make a voice memo

for Winnie and Franny, if you'd let me.

-My daughters? They would love it so much.

-Yeah, your daughters. -Yeah, they would freak out.

-I talked to Disney. I got the song cleared.

-No. So, it's not --

The whole thing doesn't have to be bleeped out.

So, basically, I just go into my iPhone.

This is no "Sexual Healing," but it is a song from "Frozen."

[ Laughter ]

-All right, so Winnie and Franny --

-It'd be weird if I sang "Sexual Healing," too.

-Yeah, yeah, yeah, please don't.

-Okay. So this is what I do when I do a voicemail.

You ready?

-We're just gonna be really quiet.

Okay.

-"Hi, Winnie and Franny. This is Kristoff

from the movie 'Frozen,' and I'm here with my friend Sven.

Say hi, Sven."

"Hi, Winnie and Franny! It's me, Sven!"

"And we wanted to sing a song for you.

Isn't that right?" "That's right, Kristoff.

Let's sing them a song!" Okay, here we go.

[ Clears throat ]

♪ Reindeers are better than people ♪

♪ Sven, don't you think that's true? ♪

♪ Yeah, people will beat you and curse you and cheat you ♪

♪ Every one of 'em's bad, except you ♪

♪ Thanks, buddy ♪

♪ But, Winnie and Franny, smell better than reindeers ♪

♪ Sven, don't you think I'm right? ♪

♪ That's once again true ♪

♪ 'Cause, Winnie and Franny, we love you ♪

♪ Now tell Winnie and Franny good night, good night ♪

♪ Don't let the frostbite bite ♪

"We love you, Winnie and Franny!"

-Oh my God! [ Cheers and applause ]

Dude, that's amazing!

You have to e-mail it to me. -Yeah, I will.

-That is -- [ Cheers and applause ]

Oh, my gosh.

That will be played every single night in my house.

"Go to bed!" [ Laughter ]

Wow!

I should have yelled it at the end -- "Go to sleep!"

[ Laughter ]

"I read you three books! Now stop it!"

-"Go to bed!" [ Laughter ]

What's your number? [ Laughter ]

-I got to give you my thing afterwards.

-Yeah, yeah, yeah.

-"Frozen 2" comes out November 22nd.

November 22nd. This is the big holiday film.

And, no spoilers. You can't say what anything

is happening or going on.

Is there anything you can give me at all?

-Yeah, okay. So, in addition to getting

the rights for the song, I also got permission --

I was just recording my final session last Friday,

and they allowed me to release a line from the movie,

sort of like the trailer earlier.

This is, like, a world premiere of one of my lines

that will be in the movie from "Frozen 2."

-This is amazing. -If you want to hear it.

[ Cheers and applause ]

-Get up! Everyone, stand up!

This is amazing! We're very excited about this.

Let me make sure I got the microphone right.

[ Cheers and applause ]

[ Laughter ]

-Feels so real. Okay.

Ready?

-I was born ready. [ Laughter ]

-Can I get a little more of a drumroll?

Just to really get in the... [ Drumroll ]

-"What are you gonna do with that?"

There you go. Oh, my God.

[ Cheers and applause ]

♪♪

-This is insane right now. This is insane.

This is -- This is all over Twitter.

This is trending. Number one trend on Twitter is

"What are you gonna do with that?"

[ Laughter ]

Wow! -That really is a line.

I was like, "Can I say this on 'The Tonight Show'?"

and they were like, "Yeah." -No way.

There you go. There's a little treat.

Thank you for doing that for us. [ Cheers and applause ]

Jonathan Groff, we have to talk about "Mindhunter."

This is a very cool show.

And very cool creator or just the director?

David Fincher. -Both, essentially.

He's like our -- He's basically God.

-David Fincher is unbelievable. -He's the God of "Mindhunter."

-He is amazing. -Yeah.

-I love that dude. Oh, my gosh.

What is it like to work with David Fincher?

-He's incredible. Also, he loves you

and said to say hello to you. -Really?

-Yeah. He adores you.

-Can you put that in a voice memo?

[ Laughter ]

-I'll get him to make a voice memo for you.

-Please make one for me. Yeah, please.

-"Hey, Jimmy, it's David Fincher."

[ Laughter ]

"Go to bed." -Yeah, he's like --

[ Laughter ]

"Or you're gonna end up in a panic room."

Like, "This will scare my children."

Yeah, okay, yeah. Yeah, don't --

In fact, don't have him record anything for my children,

please, yeah. -Yeah, okay.

-I am the biggest fan, though. But is he --

-He would be the wrong person to record something for your kids.

-Yeah. He is a genius, though.

How does he direct you? How did you guys --

Do you guys get along? You must.

-We get along really well. Here's the thing.

If you show up and are ready to give 125%, it's a dream.

It's like he makes everybody work at sort of

the top of their abilities.

The one tiny problem that I have on set with David

that I feel like you also would share in

is that I have trouble with laughing.

So, I get -- -Wh-a-a-at?!

[ Laughter ]

Whoa, whoa, whoa, whoa! What?!

Me? Laughing?

Oh, my God! Oh, really?

-Yeah, 'cause it's so serious, and he doesn't allow me to smile

'cause I smile a lot in person. -No, "Mindhunter."

Yeah, it's not a comedy. -Yeah, exactly.

-No, yeah. You're hunting.

-Obviously. Right, I'm hunting minds.

-You're hunting minds, exactly.

-You can't smile while you do that.

-You can't do that. You have to be serious.

Yeah, you're in the thing. Oh, I would totally be fired.

I couldn't even audition for David Fincher.

He would totally throw me out of the room.

-You could, you could. -No, I can't,

because I can't keep a straight face.

-You're doing it right now.

-I know, but give me one of the lines.

I'm gearing up. -Okay.

[ Giggles ]

[ Laughter ] -I'm sorry, I'm sorry.

This is why we -- Okay. The line is --

-I'm just sitting here. I'm reading the playbill,

and, like, you got to come up -- -Okay.

-I'm ready to get into mind hunting.

-Okay. So the line would be -- -Yeah, yeah, yeah, whatever.

[ Exhales sharply ] Yeah, whatever.

-"What are you gonna do with that?"

[ Light laughter ]

[ Laughter ]

-I almost did it.

I'd be crying.

I would cry all of my scenes to try to deliver it like that.

-Exactly. -I could never do it.

I'm a better fan of watching the show.

Tell everyone what it's about.

If you haven't seen season one, get ready to binge.

-Right. So, if you haven't seen season one,

"Mindhunter" is basically the origin story

of the Behavioral Science Unit in the FBI.

It's about the team that came up with the term "serial killer."

This idea of going into jails and interviewing

incarcerated mass murderers to glean information

to then prevent crimes from happening.

So, then, we think of that idea in the first season,

and in the second season, we try to make it work on the field.

We interview more serial killers.

We get involved in the Atlanta child murders,

which was a famous case in the early '80s,

and continue the sort of psychological exploration

of serial killers.

-I love shows like this. I want to show everyone a clip.

Here's Jonathan Groff in "Mindhunter."

Take a look.

-He's equating himself with famous killers.

Son of Sam, Jack the Ripper, Ted of the West Coast.

-That's got to be Bundy. Who's Glatman?

-Harvey, famous for biting and strangling women in the '50s.