Ok I find one very interesting,cool optical illusion and similar to the dragon one but this is a definitely better, I agree dragon illusion is really a wonderfull but this is also one cool illusion!When you move around, the face seems to follow you around the room if you stare in it's eyes. Have a look at the video, to see what I mean. The effect is frightening! However the face gives us the wrong clues, because we mis-interpret what its shape is. We assume that the nose of the face is pointing out towards us, but in fact the face is concave.

Yes I remember the dragon illusion, but I also look this illusion and I circuitry can tell you this is awesome optical illusion, just similar like dragon one!