Michael Klastorin was the unit publicist for Back to the Future Part III. He co-wrote along with his brother Mark Klastorin the screenplays of two episodes of Back to the Future: The Animated Series ("Roman Holiday" and "Verne Hatches an Egg"). He was one of two authors of Back to the Future: The Official Book of the Complete Movie Trilogy.
Klastorin also appeared as an extra in Back to the Future Part III as a resident of Hill Valley that says "Good morning Mister Eastwood".