Have you seen the Green Mile...
Now they can do some amazing things with camera work and clearly he's not as tall as he is portrayed in the Green Mile, but he wasn't wearing a "muscle suit" or some shit out of a "Nutty Professor" movie. He was definitely juiced for that movie. Granted he was quite fat, but he was REDICULOUSLY huge in that movie. He has never appeared to be that big in any other movie...not even close.