Question: Greenberg is a 2010 American comedy-drama film, it stars which American actress and filmmaker?

Context paragraphs:
The Switch (2010 film): The Switch is a 2010 American comedy-drama film directed by Josh Gordon and Will Speck.  Based on a screenplay written by Allan Loeb, the film, formerly titled "The Baster", was inspired by the short story "Baster" by Jeffrey Eugenides, originally published in "The New Yorker" in 1996.  The film stars Jennifer Aniston, Jason Bateman and child actor Thomas Robinson.  Patrick Wilson, Juliette Lewis, and Jeff Goldblum appear in key supporting roles.

Gerald (film): Gerald is a 2010 American comedy-drama film written, produced and edited by Tim Gallagher, directed by Marc Clebanoff (director of "Break"), and stars Louis Mandylor and Mackenzie Firgens with Deborah Theaker and Mickey Rooney.  The main character, Gerald, was inspired by "Forrest Gump", Seymour Krelborn of "Little Shop of Horrors" and Mr. Gallagher's personal experience with mentally challenged individuals.

Greenberg (film): Greenberg is a 2010 American comedy-drama film written and directed by Noah Baumbach.  The film stars Ben Stiller, Greta Gerwig, Rhys Ifans and Jennifer Jason Leigh.  "Greenberg" was produced by Scott Rudin Productions and distributed by Focus Features.  The film's soundtrack features the first film score by James Murphy.

A Little Help: A Little Help is a 2010 American comedy-drama film written and directed by Michael J. Weithorn.  It follows the experiences of a dental hygienist following her unfaithful husband's sudden death.  It debuted on May 21, 2010 at the Seattle International Film Festival.

Why Did I Get Married Too?: Why Did I Get Married Too?  is a 2010 American comedy-drama film produced by Lionsgate and Tyler Perry Studios and stars Janet Jackson, Tyler Perry, and Tasha Smith.  It is the sequel to "Why Did I Get Married? " (2007), The film shares the interactions of four couples who undertake a week-long retreat to improve their relationships.

Expecting Mary: Expecting Mary is a 2010 American comedy-drama film starring Elliott Gould, Linda Gray, Lainie Kazan, Cloris Leachman, Della Reese, Olesya Rulin, Cybill Shepherd, Gene Simmons, and Fred Willard.  It was written and directed by Dan Gordon and produced by Kim Waltrip with executive producer Jim Casey.  The film premiered at the Palm Springs International Film Festival 2010 on January 16 and was selected as the opening film at the California Independent Film Festival on April 22, 2010.

Father of Invention: Father of Invention is a 2010 American comedy-drama film directed by Trent Cooper, and stars Kevin Spacey, Camilla Belle and Johnny Knoxville.

Our Brand Is Crisis (2015 film): Our Brand Is Crisis is a 2015 American comedy-drama film directed by David Gordon Green and written by Peter Straughan.  Based on the 2005 documentary film of the same name by Rachel Boynton, it is a fictionalized account of the involvement of American political campaign strategists Greenberg Carville Shrum (GCS) in the 2002 Bolivian presidential election.  The film stars Sandra Bullock, Scoot McNairy, Billy Bob Thornton, Anthony Mackie, Ann Dowd and Joaquim de Almeida.

Greta Gerwig: Greta Celeste Gerwig (born August 4, 1983) is an American actress and filmmaker.  Gerwig first came to prominence through her association with the mumblecore film movement.

The Kids Are All Right (film): The Kids Are All Right is a 2010 American comedy-drama film directed by Lisa Cholodenko and written by Cholodenko and Stuart Blumberg.  A hit at the 2010 Sundance Film Festival, it opened in limited release on July 9, 2010, expanding to more theaters on July 30, 2010.  It was released on DVD and Blu-ray on November 16, 2010.  The film was awarded the Golden Globe Award for Best Motion Picture - Musical or Comedy, and Annette Bening was awarded the Golden Globe Award for Best Actress – Motion Picture Musical or Comedy.  The film also received four Academy Award nominations, including one for Best Picture, at the 83rd Academy Awards.

Supporting paragraphs: Greenberg (film) Greta Gerwig
Answer: Greta Celeste Gerwig