Transcript for How George Clooney Got Bill Murray, Matt Damon to Do 'Monuments Men'
we'll talk about "Monuments men." You know George Clooney does everything in the movie, he acts, he writes, he produces and based on an incredible true story about a special world war ii platoon with art ex-pers that wanted to save masterpieces from the nazis. Here he is with Matt Damon. Monuments men. Signed by Roosevelt. Oh, I see that. I'm to put a team together to try to protect what's left and find what's missing. Respect you a little old for that? Yes. You want to go into a war zone and tell our boys what they can and cannot blow up. That's the idea. Okay. How many men? For now, six. Jesus. With you, that's seven. That's much better. Go through basic England and wait for orders. Basic? Uh-huh. Basic training? Us? Oh, boy. And they went on the adventure. Cle Clooney right here and right now and heard there's life imitating art getting the gang together. You went all over the world to get them. I went to Australia for a day which is a fun flight to get cate Blanchett and bill Murray came out to my house in Italy, we've been friends for a long time which is -- it's a funny friendship, you know, because he's hard to get a hold of a lot of times and sometimes he'll call and say I'm here and send a car to pick him up. And Matt, I just -- I think I just sent an e-mail to Matt because we worked together six times fairly easy. You could see it on the screen. So great it see you all work together and what a gift to bring this story to so many people. I was just telling you before this was a big blind spot to me. An incredible story. It is and you know we think after 70 years we really do have all the stories sort of milked from world war ii. We figure we have them all down and this is a really big story because it was literally hitler and the nazis' plan wasn't just to steal all the art from all the countries that they conquered, but it was also to destroy a lot -- If they couldn't get away with it they would destroy it. It wasn't enough to own a piece of art. He was building a giant museum in Austria but he also -- he just wanted it to be as if you didn't exist. He wanted to destroy your culture and I've seen that in other countries, I've soon it in the Sudan when I've been there, you know, and it is a very interesting piece of -- it's an interesting way of how you destroy someone's, you know, entire history. You have a lot of fun in the movie. A lot of action but you do get at these big question, not only the ones you raise but also the sacrifices people make for art and whether it's worth sacrificing a life to save a piece. I think it's a really fair question because if we were going to talk just you and I and you said I got a famous piece of art hanging in my house and it's on fire, you get your family out and I'm not quite sure if you risk your life. If you're willing to die to save that painting. Some people would be wills to die to save the Mona Lisa. They might be but the argument I would make these men and what they were doing they weren't talking about risking their lives to save a piece of art, what they were saying is you're not going to be allowed to destroy our entire culture and not only kill everyone, but also say that we never existed, that we weren't here and that is worth dying for and that I think is what those men -- that's what was so important. May be about to get the recognition. I hear they're up for a congressional gold medal. You got to meet un. Ari atlinger was the youngest and came to the premiere the other night and going to have dinner with him and he's really fun and funny and enjoying this time. I bet you he is. A lot of pranks but I got to tell you we're getting all kinds of questions coming in on Twitter right now. Everyone wants to know what you're going to do to Tina fey and Amy Poehler for this. Oh, you got it. It's a story of how George Clooney would rather float away into space and die than spend one more minute with a woman his own age. Now you promised to get them back. I already started. I sent -- I sent her a letter from Matt Damon -- Matt Damon's stationary that said dear Tina, I may sound like a hypocrite but understand -- because I laughed at the jokes about George and about Leo but they're kind of known for that and, you know, when you called me a garbage man, you know, it really hurt me and my kid calls me a garbage man now and I sent her the letter and then Matt -- Matt knowing nothing about it gets two giant baskets of fruit a few days later with letter number one and letter number two and letter number one, Matt, Jesus, I'm so sorry. I thought we were friends. I thought you could take it and letter number two is this is a prank from George Clooney and tell him we're grown ass comedians and you better step your game up. So -- That's justs beginning. I'm doing something that I'm actually ashamed of that's -- We can't wait to hear about it. We'll send you photos. I'm sure you'll find out about it later. "Monuments men" opens nationwide tomorrow. George, thanks a lot.
This transcript has been automatically generated and may not be 100% accurate.