Film on Instagram: "For Zodiac (2007), Jake Gyllenhaal studied real interviews and footage of Robert Graysmith to capture his quiet curiosity and growing obsession, Robert Downey Jr. added improvisation and sharp wit that matched the real Paul Avery and became an important moment in his comeback before Iron Man, and Mark Ruffalo closely observed detective Dave Toschi’s real movements including his gun grip and holster style with Toschi even visiting the set and praising Ruffalo for portraying hi