Even though Peter Jackson and Fran Walsh knew Elijah Wood had the part, they waited for him to speak. As the director said Charlie Rose:
“That’s right, except we didn’t say it right away to Elijah. We had to go see him because obviously I’ve never met Elijah and you don’t want to work with someone you can’t interact with. OK, so we had to go through the process of meeting him in LA and talking. Because one of the things when casting this movie was the fact that we wanted to get actors who would stay with us. for 18 months because, you know, an actor can’t be saved at the end of the first movie. They have to be there for three movies.”
Jackson highlighted an important element when embarking on an adaptation of a trilogy like “The Lord of the Rings.” If you’re going to cast someone in a role that requires you to work with them for years, you’d better get along. We’ve all heard horror stories about the kind of headaches behind-the-scenes movies can cause on set and the disastrous effects it can have on production.
There’s a reason the cast of Jackson’s films are still rarely reunited here and there nearly a decade later. And if you’re like me, who spent her entire childhood poring over the hours of behind-the-scenes that the expansions offer, the shared goofiness between the cast and crew is proof of that. See how they all enjoy working together. Case in point, Viggo Mortensen didn’t miss a beat to quip about Jackson and Wood’s collaboration: “They hired him despite that encounter.”
https://www.slashfilm.com/946609/elijah-woods-lord-of-the-rings-audition-was-a-little-out-of-the-ordinary/ Elijah Wood’s Lord of the Rings audition was a bit unusual