David Yorston

Movies

Superman
Petty Officer (uncredited)
Mild-mannered Clark Kent works as a reporter at the Daily Planet alongside his crush, Lois Lane. Clark must summon his superhero alter-ego when the nefarious Lex Luthor launches a plan to take over the world.
Sudden Fury
Dan
Fred is a psychotic entrepreneur who hopes to convince his wife Janet to invest in a shady land deal. The wife refuses, and the couple continue their heated argument while driving through the Ontario backwoods. When their car crashes, Janet is seriously injured, but Fred leaves the scene, hoping that his wife won't last the night.
Rip-Off
Math teacher
Best friends Michael, Steve, Cooly and Richie are seniors at a large Toronto high school. Foremost on their minds and that of many of their classmates are what they are going to do this upcoming summer and beyond. They don't want to waste away the summer much like they did this past summer. Mike is being pressured by his parents to go to university following graduation from high school, although Mike himself is unsure if that's what he wants to do. Other ideas they discuss are to tour with their band, Arctic Madness, or to start a commune on a five hundred acre parcel of wilderness property outside of Timmins that was deeded to Mike. As the end of the school year approaches and these successive ideas come and fall by the wayside, the four come to a realization of what their future together holds
The Green Slime
Lt. Curtis
A giant asteroid is heading toward Earth so some astronauts disembark from a nearby space station to blow it up. The mission is successful, and they return to the station unknowingly bringing back a gooey green substance that mutates into one-eyed tentacled monsters that feed off electricity. Soon the station is crawling with them, and people are being zapped left and right!