A Scanner Darkly (2006)

Rotoscope, a process invented by Max Fleischer of animated superman fame. Who's son, Richard Fleischer, was a director for many films including Soylent Green (1973) and Fantastic Voyage (1966). Less notable for Million Dollar Mystery (1987) in which famous stunt man Dar Robinson died, and to whom Lethal Weapon(1987) is dedicated.

I just watched Lethal Weapon and A Scanner Darkly back to back and stumbled upon their connection.