Question: What actor in many Coen brothers films also appeared in a film directed by Tim Blake Nelson? 

Context paragraphs:
Eye of God (film): Eye of God is a 1997 crime film directed by Tim Blake Nelson.  It stars Martha Plimpton.  Nelson won best director in the American Independent Award for the Seattle International Film Festival in 1997 and Bronze Award in the 1997 Tokyo International Film Festival.  He was also nominated for the Someone to Watch Award in the 1998 Independent Spirit Awards and Grand Jury Prize at the 1997 Sundance Film Festival.

The Confirmation: The Confirmation is a 2016 Canadian drama film starring Clive Owen, Jaeden Lieberher, and Maria Bello.  Written and directed by Bob Nelson, who also produced it with Todd Hoffman, the film concerns a young boy (Lieberher), who tries to reconnect with his divorced father (Owen).  The film also co-stars Robert Forster, Tim Blake Nelson, Patton Oswalt and Matthew Modine.  It marked the first time Nelson had ever directed a film.  "The Confirmation" received a limited release in selected theaters in the United States and on iTunes on March 18, 2016.

O Brother, Where Art Thou?: O Brother, Where Art Thou?  is a 2000 crime comedy film written, produced, and directed by Joel and Ethan Coen, and starring George Clooney, John Turturro, and Tim Blake Nelson, with John Goodman, Holly Hunter, and Charles Durning in supporting roles.

O Brother, Where Art Thou? (soundtrack): O Brother, Where Art Thou?  is the soundtrack album of music from the 2000 American film of the same name, written, directed and produced by the Coen Brothers and starring George Clooney, John Turturro, Tim Blake Nelson, and John Goodman.

Anesthesia (film): Anesthesia is a 2015 independent drama film written, produced and directed by Tim Blake Nelson.  Nelson stars in the film with Sam Waterston, Kristen Stewart, Glenn Close, Gretchen Mol, and Corey Stoll.  The film premiered at the Tribeca Film Festival on April 22, 2015.  The film was released in a limited release and through video on demand on January 8, 2016 by IFC Films.

Steve Buscemi: Steven Vincent Buscemi ( ; born December 13, 1957) is an American actor and film director.  Buscemi has starred and supported in successful Hollywood and indie films, including "Parting Glances", "New York Stories", "Mystery Train", "Reservoir Dogs", "Desperado", "Con Air", "Armageddon", "The Grey Zone", "Ghost World", "Big Fish", and "The Sopranos".  He is also known for his appearances in many films by the Coen brothers: "Miller's Crossing", "Barton Fink", "The Hudsucker Proxy", "Fargo", and "The Big Lebowski".  Buscemi provides the voice of Randall Boggs in the "Monsters, Inc." franchise.

The Grey Zone: The Grey Zone is a 2001 film directed by Tim Blake Nelson and starring David Arquette, Steve Buscemi, Harvey Keitel, Mira Sorvino, and Daniel Benzali.  It is based on the book "Auschwitz: A Doctor's Eyewitness Account" written by Dr. Miklós Nyiszli.

Holes (film): Holes is a 2003 American adventure comedy-drama film directed by Andrew Davis, produced by Lowell D. Blank, Mike Medavoy and Teresa Tucker-Davies with music by Joel McNeely and based on the 1998 eponymous novel by Louis Sachar (who also wrote the screenplay).  The film stars Sigourney Weaver, Jon Voight, Patricia Arquette, Tim Blake Nelson and Shia LaBeouf.  The film was co-produced by Walden Media and Walt Disney Pictures and distributed in many markets by Disney's distribution company Buena Vista.

Crimewave: Crimewave is a 1986 American comedy film directed by Sam Raimi, written by him and the Coen brothers, and starring Louise Lasser, Paul L. Smith, Brion James, Sheree J. Wilson, Edward R. Pressman, Bruce Campbell, and Reed Birney, with Campbell also serving as a producer.  Following the commercial success of "The Evil Dead" (1981), Raimi and Campbell decided to collaborate on another project.  Joel Coen of the Coen brothers served as one of the editors on "The Evil Dead", and worked with Raimi on the screenplay.  Production was difficult for several members of the crew, and the production studio, Embassy Pictures, refused to allow Raimi to edit the film.  Several arguments broke out during the shoot for the film, because of continued interference by the studio.

Leaves of Grass (film): Leaves of Grass is an American comedy-drama film written and directed by Tim Blake Nelson.  It stars Edward Norton as two twin brothers, alongside Richard Dreyfuss, Blake Nelson, Susan Sarandon, Melanie Lynskey and Keri Russell.  The film, released on September 17, 2010, is in limited release by Millennium Pictures.  It was featured in the 2009 Toronto International Film Festival.

Supporting paragraphs: The Grey Zone Steve Buscemi
Answer: Steve Buscemi