There's nothing more alternately depressing/inspiring than seeing someone like Dean Zimmer succeed in ways that you could never imagine. Your first reaction is always something like, "Wow! This guy is incredible. I'm so happy that he could overcome his personal obstacles to do what he loves." Then after that you're like, "Wait. I'm sitting here on a computer, with four fully functioning limbs, and I can't even play 'Three Blind Mice' on the piano." Maybe consider taking up an instrument this weekend?