This demo seems like a really solid idea. I've been firmly in the "pass" camp for a while, but I'll definitely give the demo a chance and see if I can be swayed into a game sale.
I'll be honest, I'm a little excited too, I love GT and want it to succeed.
Edit: With this post I became an official Member of NeoGAF. While I don't post as often as I'd like, I do lurk almost constantly, and had been for years before actually getting my account. This community has helped me become more sensitive, aware and empathetic to the lives and struggles of people outside of my little bubble and for that I am grateful. Thanks!