He does look miserable or at least slightly constipated while playing. I always wished that he would "get into it" a bit more....and he was incredible, of course. How he can play so fast and hard after all these years is mind boggling. He snapped one of those oak sticks on the bell of his ride during his solo and without missing a beat, tossed it and pulled out another.
He looks miserable while he plays...but he tore it up, for sure. The whole band was incredible.
I just wish I had brought my earplugs, I forgot on the way out the door...
One of the things I love about Portnoy and Bonham. You can just tell how much fun they are having.