The Best Editing category was introduced in 1935 and since then has been one of the better indicators of which film has the best chance at taking Best Picture. The vast majority of Best Picture winners have also had a nomination for Best Editing and since 1981, not a single Best Picture winner has been without a Best Editing nomination.
This year's nominees:
Stephen E. Rivkin, John Refoua, James Cameron, Avatar: This is the 1st nomination for Rivkin and Refoua. Cameron has previously won for his work editing Titanic. The team has nominations from the American Cinema Editors and BAFTA, and won the Critics Choice Award.
Julian Clarke,District 9: This is the 1st Oscar nomination for Clarke, who has also received nominations from the American Cinema Editors and BAFTA.
Bob Murawski, Chris Innis, The Hurt Locker: This is the 1st nomination for both Murawski and Innis. The two have nominations from the American Cinema Editors, BAFTA, and Critics Choice, and won the Boston Film Critics Award for editing.
Sally Menke, Inglorious Basterds: Menke, who has worked with Tarantino on every one of his films, has one previous Oscar nomination (for Pulp Fiction). She has also received nominations for the BAFTA and Critics Choice Awards.
Joe Klotz, Precious: This is the first Oscar nomination for Klotz. He has received no other awards or nominations for his work on Precious.