Shuki Kato's Western Dragon. I heard it said that it is as complex as Satoshi Kamiya's Ancient Dragon and I would disagree, but not by much.
There is one step to the wings that was frustrating and took a couple hours on and off to figure out, and the head was just a mess of sinking and unsinking area. There were a couple of steps that made me wonder if they were necessary to the overall design, but in the end the result kind of speaks for itself. I really loved doing this model!
The pose, the neck, the claws and arms and legs. All perfect to me. The head could have been a bit neater I suppose and the wings are a bit of a mess, but in the end, Looks great, so whatever.
Diagrams Available here: [link]