Final answer:
Roger Smith was the head of General Motors from 1981 to 1990 and was targeted by Michael Moore in his documentary, 'Roger & Me,' which discussed the consequences of GM plant closures in Flint, Michigan.
Step-by-step explanation:
The individual who was the target of a Michael Moore documentary and served as the head of General Motors from 1981 to 1990 is Roger Smith. Michael Moore's documentary, titled 'Roger & Me,' focuses on Moore's pursuit of an interview with Roger Smith to discuss the impact of GM plant closures in Flint, Michigan. The documentary critiques the management practices and decisions that led to adverse effects on workers and the local economy.