Gary Phillips is passionate about puzzles, codes, ciphers and the like, and writes about them on his website, Realm of Twelve. It's not surprising, given his interests, that he's intrigued by Leonardo - but what is surprising is that Gary says he's seen something in the restored Last Supper mural that none of the rest of us have. Specifically, the location of the "missing" Holy Grail. You'll have to check out his highly intriguing page to see it for yourself. All I can say is that I (1) like his idea a whole lot more than the "negative space = uterus = Chalice" business, (2) can't stop staring at it and (3) appreciate that Gary got in touch to point it out. Wild.