You can supposedly download…um, something from Best Buy too.
Heh, at first I thought my coworker meant you could download the Best Buy mascot (the stupid yellow) sign as a creature. That brought on a conversation about “Corporate Mascot B&W.” The consensus was that Jack (in the Box) would kick all ass. The evil Microsoft butterfly, we also decided, would probably turn into a Mothra clone. 
Just a warning from my experience . . .
Don’t use the turtles from the little pond in the valley on the far side of the island as a food source. He turned all the food green and people started getting sick and vomiting. I had to take all the food away, which sucked for the poor villagers, but luckily I hadn’t fed the ogre yet so I gave him all the poisoned grain. But the moral is that apparently turtles are not a viable food source.
I have yet to find out if the skeletons of dead villagers count as food seeing as how the grain was already poisoned when I dropped a skeleton in. Anyone else know?
Oddly enough, it seems easier to train him to do something by doing it yourself instead of leading him through doing it. Put on the leash of learning, make sure he is watching your hand (you might have to shake it in front of his face a bit), and then pick up something and put it in his pen. He will learn it eventually.