Tommy Lee Wallace in Halloween (1978)
It is a well-known fact that in Halloween masked serial killer Michael Myers was portrayed by many people. But in this rather iconic shot Myers is not portrayed by neither Nick Castle nor Tony Moran who are credited for the role, but by Tommy Lee Wallace, film's production designer and editor who has quite some screentime as the character in the movie as well (mostly because he knew how to break and tear things in less takes then most actors).