Rashida Jones.

PARK CITY, Utah - Rashida Jones says she's overwhelmed, but looking at her, you'd never know it. Functionally yet fashionably dressed in hiking boots and a tweed blazer, she's talking to ABC News Now's "Popcorn with Peter Travers" about her first film behind and in front of the camera - "Celeste and Jesse Forever," in which she stars and co-wrote.

She and Andy Samberg play a divorcing couple who attempt to maintain their friendship throughout the separation. Among her inspirations: Woody Allen's "Annie Hall." Somewhat autobiographical (though Jones, 35, has never been married, she' s dated Tobey McGuire, John Krasinski, and was engaged to music producer Mark Ronson), she calls Celeste "an exaggerated version of the worst parts of me." "I can be controlling," she says, "I can think that i'm smarter than other people, absolutely."

She also shares with her character a juvenile sense of humor. Masturbation jokes are a cornerstone of this movie and her real life. "We go to the farmer's market," she says, talking about she and her writing partner Will McCormack, "and we buy all types of different vegetables and fruit that are shaped the right way and we just…" Here, Jones makes a motion with her hand that it would be better to not describe.

The "Parks and Recreation" star is on a new level with a film premiering at Sundance. Now that she's added writing to her resume, will directing be next? "Maybe, I would considering it," she says. "Right now I'm happy that a whole new career has opened up for me."

But she's not leaving the Amy Poheler-led sitcom anytime soon. "Hand to God, it's the best job I've ever had."