Blake was a screenwriting teacher and author of the brilliant Save the Cat!, a manual that offered a fresh approach on screenwriting structure and laid out a revolutionary template for genre.
I’ve referred to his work frequently on here* as he so often nailed the concepts I was struggling to formulate. His 10 Story Types (which he formulated in Save the Cat! and then expanded on following reader input in Save the Cat! Goes to the Movies) were a revelation to me and always a handy scythe to cut through the jungle of genre confusion.
My sincere condolences go out to his family and friends, and to every screenwriter that knew him.
You can add your condolences to Blake’s site here, but, more importantly, read his works and use them to help you write better screenplays. He was always so amazingly generous with his time when it came to helping screenwriters and his loss will be felt keenly by so many of us.
Rick Drew of MovieScope magazine writes an affectionate tribute here.