This is a great post. I'd be curious about this too. Watching a few GDC docs, apparently George wasn't a big gamer, he would rarely show up to the Lucasfilm studio where the developers worked. But on the rare occassion when he did, he would watch the product demos and then if he liked it he would say something like, 'Great work.' That's when they knew they did a good job. But on these occassions I wonder if he ever signed anything for any of the developers? I'm guessing even if he did, that signature is probably framed and not for sale.