It's two days after the Sundance world premiere of "Bachelorette" and Caplan, propped on a Main Street cafe couch sipping a soft drink, spoke of the self-consciousness that comes with watching your own movie.

"It's so stressful. You're like, 'Why is no one laughing anymore?" she said, recalling scenes late in the film when the story gets a little more serious. Told that it could be because the jokes had ratcheted down at that point, she said, "I hope that that's the case, then added, "I wish I could skip that part of it [premieres] sometimes."

Watching it in a more controlled environment has its downside too, she said. "When you see a movie just with the cast, it's a totally different vibe. Everybody is so stressed about their own performance. My reaction is always: 'Everybody else is so awesome, and I'm the weirdest-looking, worst actor ever.' It's only starting to get a little better. Just a little."

Caplan's honesty offers a rare window into the humanity of even talented actors. It’s a trait that will strike some as a refreshingly self-aware and others as off-puttingly self-involved.

Shooting films, Caplan said, is what keeps her happiest. But though she ticks off the obligatory list of projects on which she's had fun, she also allows that she often feels a certain shyness. "I'm trying to get off set most of the time," she said, when asked if she's the kind to push a director for more screen time. "There's obviously more safety in an ensemble, and the less you have to do, the less you can [screw] up."

It's fitting, perhaps, that her most famous role came as part of the large acting-cum-catering crew in "Party Down"; it's also apt, for an actress perpetually on the cusp, that the show didn't really get popular until after it was off the air.

Sundance isn't likely to be a game changer -- a couple of small films will rarely vault anyone to the A-list. But it could fix Caplan's position a little firmer on the young-Hollywood map. "Bachelorette" in particular is likely to get at least a niche theatrical release, and could attract the actress notice both for her capacity for broad comedy and because the film reunites her with Adam Scott, the burgeoning television star who, as he did in "Party Down," plays her love interest.

Caplan said she's ready and even hoping for more attention -- sort of. "I like that fans feel they discovered me, as opposed to having half the people out there hate you just because you're famous," she said. 

"And it's not like getting really famous cures anything," she added. "You don't think Tom Cruise sits at home and worries that Will Smith is getting all the big parts? Of course he does."