Sam & Mattie Make a Zombie Movie (2021) 2021, Documentary, United States Sam & Mattie Make a Zombie Movie (2021) Duration: Description: Sam and Mattie, two badass best friends with Down syndrome, rally the entire town of Providence RI to help them storyboard, script, produce, cast, and star in their own dream movie: ‘Spring Break Zombie Massacre.’.. Trailer ↗ United States 2021 Documentary