To most people he was a movie critic, maybe The Movie Critic. And he was to me, too. But, over the last ten years as he battled cancer that permanently altered his physical appearance and functionality, he also became a person with a disability. And not just as other people reckon it. He wrote about it occasionally, and most recently his Twitter feed regularly included links to the Smart Ass Cripple blog, which I guess was one of Ebert's regular reads.
Once I finish this other thing, I'll come back and maybe post some links and further thoughts.