Ruffalo and Redford costarred as a pair of military prison inmates the 2001 movie 'The Last Castle,' which Mark Ruffalo wrote "was seminal to me" Mark Ruffalo shared a letter he once wrote to , Mark Ruffalo has hailed Robert Redford as a "real American hero". The Hollywood icon passed away on Tuesday (09.16.25), aged 89, and Mark has taken to social media to share a letter than he wrote , Ruffalo took to Instagram to honor and remember Redford in a touching tribute. He shared screenshots of the letter he had written to the Hollywood giant, but lost the chance to send before he died. "This was a letter I had written to Robert Redford when I learned he was ill," Ruffalo wrote in the caption of his post., Alec Baldwin shares Robert Redford’s heartfelt letter of support after the Rust shooting case was dismissed, highlighting their bond amid tragedy., Alec Baldwin claimed that Robert Redford sent him a heartfelt letter expressing support after the 2021 'Rust' shooting incident, Alec Baldwin claimed Robert Redford sent him the 'loveliest letter' after the 'Rust' shooting incident..