I swear by multi-monitor setups. Three monitors is pretty good if your budget and/or desk can't support six monitors. So Yanagi is at least on the right track here.
But why would anyone use a mouse pad with a trackball? (You don't move the mouse at all—only the ball.) Also, using a thumb-based trackball with triple monitors would be agonizing. I hope this dude has some sort of turbo acceleration for his pointer, because navigating from one side to the other with that tiny trackball would drive me insane.