One of my favorite science fiction writers, Philip Jose Farmer, died on Feb. 25. He was never as famous are other vintage SF writers such as Isaac Asimov, Robert Heinlein or Arthur C. Clarke, but he had a devoted following. I loved many of his books and loved his energy and wild imagination. Some of his best books included the first two Riverworld novels, "To Your Scattered Bodies Go" and "The Fabulous Riverboat," his five "World of Tiers" novels, and two short story collections, "Down in the Black Gang" and "The Book of Philip Jose Farmer."
Writer Jo Walton wrote a good appreciation of Farmer on a blog; the comments (including from famous SF editor David Hartwell) are insightful, too.