Joseph Z.'s newest build jumps out at me as a very unique castle MOC. It does a masterful job of combining what it's easy to accept as the most common modern castle style (with the patchwork plate-filled brick walls, etc.) with its exact inverse, a totally clean and symmetrical style, like the striking stained-glass evenly spaced along the frame. I had the pleasure of seeing this build in person at Brickfair in Virginia last weekend, and I can vouch for the fact that it certainly looks great even without this crisp white background.