EW was there to witness the discussion here are the five nerdiest takeaways from what we saw.

Colbert has more in common with Hoult and Collins than not knowing how to pronounce Tolkiens name, however.

This led to a temporary role reversal, when Hoult started askingColbertabout how his role came about.

2019 Montclair Film Festival - Tuesday, May 7th

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The story was hilariously nerdy.

She handed me a tube and I unrolled the scroll.

Be in the movie!

I cannot say.

Colbert said he saw echoes of his own life in the song: Its so true.

How World War I built Middle-earth

Tolkien spends a lot of time in World War I.

It is the pools of dead bodies who couldnt be removed from the battlefield.

They would just be all around, in the water, and you couldnt do anything for them.

That haunting imagery is directly from his experience on the Somme.

There are so many.

So he must have felt that going over the top, which he did, is that.

Its something you do in vain.

You know youre gonna get killed, you cant beat this battle.

Everyone who fights a Balrog dies, Colbert added.

Three people fight Balrogs and they all die, including Gandalf.

Theres something about their relationship that seems almost mythical in itself, Colbert said.

I felt like she was ethereal to me.

So we played her music and I kept dancing, and dancing, and dancing.

Its not something I would think about during scenes, but hopefully subconsciously it helped.

Karukoski was certainly impressed.

To be clear, I didnt ask for this, the director said.

I realized youre actually at an actor.

At that moment I was like wow, this guy really digs into roles!