There are dark comedies and then there is All About Nina, the first feature film from director Eva Vives (although she wrote the screenplay for Raising Victor Vargas). It’s really a dark drama with both feet in the stand-up comedy world, so we find ourselves laughing at the jokes, despite a lead character that is in desperate need of emotional salvation.

Mary Elizabeth Winstead is dynamite as Nina Geld. And dynamite is meant to have two definitions here. She is terrific in the role, and she (her character) explodes with little notice. Nina Geld is definitely provocative, a feminist, funny, and is most definitely messed up. We learn all of this in the first 5 minutes, and spend the rest of the movie waiting to see whether she self-destructs or is somehow saved.

We first see Nina as she delivers a set on stage at a comedy club. Her act is mostly about sex and the misery of relationships. We soon learn why she seems to have little happiness in life. The abusive married cop (Chace Crawford, Tony Romo’s brother-in-law) she has been seeing interrupts the one-night stand she was looking forward to. It’s quite unsettling to watch this unfold, and it seems to be the final straw needed to push Nina to relocate from New York City to Los Angeles. It’s southern California where her agent (Angelique Cabral) has arranged for to audition for “Comedy Prime” – a one hour comedy special produced by Larry Michaels (played by Beau Bridges).

In L.A., Nina rooms with a stereotypical southern California “New Age” type (Cate del Castillo) who senses energy fields and remains quite civil in her arguments with her partner (played by Clea DuVall). Mostly we see what a damaged soul that Nina is, and bearing an unfair brunt are her mother (Camryn Manheim), her mom’s friend (Mindy Sterling, Austin Powers), and a fellow comic (Jay Mohr).

When Nina meets Rafe (Common, in a rare leading man role), she begins to show her first signs of actual human connection. Of course she is confused by this, and her self-destructive being rears up. The big reveal as to the cause of Nina’s constantly confused state (I don’t believe the therapy sessions are working) is held back until late in the final act…and it’s a doozy that leads to a painfully honest onstage meltdown.

Ms. Winstead is really terrific here, and she is absolutely believable in her stand-up bits. In fact, the montage of impressions and her constant fine-tuning of the act are almost as good as the heavy drama pieces she excels at. The film itself is kind of a mash-up of stories, but it’s her performance that keeps us onboard…even as we question her character’s stability (and incessant hair tussling).