
Dennis Muren, A.S.C. (born November 1, 1946) is an American film visual effects artist and supervisor. He has worked on the films of George Lucas, Steven Spielberg, and James Cameron, among others, and has won nine Oscars in total: eight for Best Visual Effects and a Technical Achievement Academy Award. The Visual Effects Society has called him "a perpetual student, teacher, innovator, and mentor."
He has been identified as "a pioneer in bringing a new wave of visual effects films to the public, opening the doors for screenwriters and directors to tell stories never before possible with a new realism through the use of his skills in cinematic arts and advanced technologies."
According to Spielberg, Muren "set the example at Industrial Light & Magic for visual effects excellence with effects that add strong, appropriate emotion to a shot and fit seamlessly into a movie."
Description above from the Wikipedia article Dennis Muren, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Raiders of the Lost Ark
1981 · as Nazi Spy on the Airplane (uncredited)

The Pixar Story
2007 · as Self

Ray Harryhausen: The Early Years Collection
2005 · as Self

Side by Side
2012 · as Self

Spielberg
2017 · as Self

R2-D2: Beneath the Dome
2001 · as Self

Ray Harryhausen: Special Effects Titan
2012 · as Self

Return to Jurassic Park
2011 · as Self

T2: Reprogramming The Terminator
2017 · as Self

The Making of 'Hulk'
2003 · as Self

The Making of 'Indiana Jones and the Temple of Doom'
1984 · as Self

The Sci-Fi Boys
2006 · as Self

In Search of Tomorrow
2022 · as Self - Interviewee

Masters of Illusion: The Wizards of Special Effects
1994 · as Self

SP FX: The Empire Strikes Back
1980 · as Self

From Star Wars to Jedi: The Making of a Saga
1983 · as Self

The Making of 'Jurassic Park'
1995 · as Self

From Star Wars to Star Wars: The Story of Industrial Light & Magic
1999 · as Self