Jason Reitman's second feature film, Juno, turned out to be the surprise hit of the Telluride Film Festival, before moving on to Toronto. Reitman took time out of his last day at Telluride to sit down and chat about his film, why it works, and why guys just don't want to grow up.

(NOTE: This interview is a discussion of the film that contains spoilers, so if you don't want to know anything about it before you see it, stop reading now.)

Cinematical: Let's talk about how you found the Juno script to begin with and why you wanted to film it.

Jason Reitman: I was fortunate enough that I had Mason Novack (Diablo's manager) found Diablo, and I knew Mason, and so I had a copy of the script as soon as it came out.

Cinematical: And what did you like about the script? What did Diablo do right?

JR: What she did right was this: She took a very tricky piece of material and made interesting decisions at every turn. Every time a character had a line of dialog, every scene, she made the interesting, unexpected decision. Not the usual decision, but that was not precious, but that was honest and real and sometimes very funny. That's what I liked about Thank You for Smoking. That film turns on the world of cigarettes, and Chris Buckley makes those kinds of unusual, hilarious decisions at every turn. Diablo does the same thing, and she's very good at it.