Question: What Icelandic film editor's work includes a film starring Liam Neeson and Geoffrey Rush?

Context paragraphs:
Unknown (2011 film): Unknown is a 2011 British-German-French psychological thriller action film directed by Jaume Collet-Serra, starring Liam Neeson, Diane Kruger, January Jones, Aidan Quinn, Bruno Ganz, and Frank Langella.  The film is based on the 2003 French novel published in English as "Out of My Head", by Didier Van Cauwelaert.

Gun Shy (film): Gun Shy is a 2000 film written and directed by Eric Blakeney, and starring Liam Neeson, Oliver Platt and Sandra Bullock.

Non-Stop (film): Non-Stop is a 2014 American mystery action thriller film directed by Jaume Collet-Serra and starring Liam Neeson, Julianne Moore, Michelle Dockery, Lupita Nyong'o, and Scoot McNairy.  An international co-production among France, the United States, and the United Kingdom, it was the first film from Silver Pictures since "Weird Science", and its first film to be distributed by Universal Pictures since the end of Universal's deal with Warner Bros..  The film received mixed to positive reviews from critics and was a box office success.

Les Misérables (1998 film): Les Misérables is a 1998 film adaptation of Victor Hugo's 1862 novel of the same name, directed by Bille August.  It stars Liam Neeson, Geoffrey Rush, Uma Thurman, and Claire Danes.

The Grey (film): The Grey is a 2011 British-American survival thriller film co-written, produced and directed by Joe Carnahan and starring Liam Neeson, Frank Grillo and Dermot Mulroney.  It is based on the short story

Valdís Óskarsdóttir: Valdís Óskarsdóttir (born 1950 in Akureyri, Iceland) is an Icelandic film editor whose work includes "The Celebration", "Les Misérables", "Finding Forrester" and "Eternal Sunshine of the Spotless Mind".

Ethan Frome (film): Ethan Frome is a 1993 British-American drama film directed by John Madden and starring Liam Neeson, Patricia Arquette, Joan Allen and Tate Donovan.  It is an adaptation of the novella "Ethan Frome" by Edith Wharton.

Lamb (1985 film): Lamb is a 1985 British drama film, directed by Colin Gregg and starring Liam Neeson, Hugh O'Conor and Ian Bannen.  The film is based on the novel by Bernard MacLaverty, who also wrote the screenplay.

Shivaay: Shivaay is a 2016 Indian Hindi-language action thriller film directed and produced by Ajay Devgn under his banner Ajay Devgn FFilms.  The story and screenplay are written by Sandeep Shrivastava and the film features Ajay Devgn in the lead titular role along with debutante actresses Sayyeshaa Saigal, Abigail Eames and Erika Kaar in lead roles.  The basic plot of the film is the same as that of the 2008 Hollywood film Taken starring Liam Neeson.  Mithoon has composed the film's score and soundtrack.  British band The Vamps and composer Jasleen Royal are also a part of the music.  The film revolves around a skilled mountaineer who turns into a destroyer when his daughter gets kidnapped by flesh traders and he is left helpless.

After.Life: After.Life is a 2009 American psychological horror-thriller film starring Liam Neeson, Christina Ricci and Justin Long, directed by Agnieszka Wójtowicz-Vosloo from her original screenplay.

Supporting paragraphs: Valdís Óskarsdóttir Les Misérables (1998 film)
Answer: Valdís Óskarsdóttir