A native of Canada who specialized in science fiction, Jenson received his Oscar nomination for his visual effects efforts on the 1984 film 2010, Peter Hyams' sequel to Stanley Kubrick's 2001: A Space Odyssey.
His older brother, Roy Jenson, a stuntman (he doubled often for Robert Mitchum) and character actor in such films as Chinatown and Soylent Green, died in April 2007.
His older brother, Roy Jenson, was a stuntman (he doubled often for Robert Mitchum) and character actor in such films as Chinatown and Soylent Green.