Whoa!!! That's the best Photoshop work I've seen on the bbs. ...we all know Yao Ming can't dunk a basketball!
I prefer him not to do that often. A lot of people criticize Yao that he doesn't jump. But the fact that he doesn't always jump means his knees will last longer.
I think this is photoshopped. Not that he can't jump that high, but if he did, his head would be through the hoop. He only has to clear about 4 inches off the floor to dunk.