Oppenheimer is the big one. The movie took home seven Academy Awards, including Best Picture, Best Director (Christopher Nolan), Best Actor (Cillian Murphy), and Best Supporting Actor (Robert Downey Jr.), and was nominated for numerous other categories. The film was inspired by the New York Times bestseller and Pulitzer Prize-winning biography, American Prometheus: The Triumph and Tragedy of J. Robert Oppenheimer by Kai Bird and Martin J. Sherwin. The book covers J. Robert Oppenheimer's career, from his early years as a physicist and teacher to his work on the atomic bomb during World War II, and later his role during the Cold War. You can grab the biography from Amazon for $15 (was $25).
American Fiction ultimately won the Best Adapted Screenplay award. It was also nominated in four other categories, including Best Actor (Jeffrey Wright), Best Supporting Actor (Sterling K. Brown), Best Picture, and Best Original Score. The film is based on the superbly written novel Erasure by Percival Everett, which is just $12.79 at Amazon (normally $17).