he donates a ton of money to the study of MS and ALS since they are related and progress in those would assist people that have the same condition as him.
(the mylin (sp?) sheath around the nerve is damaged, causing it to not work properly - I think it is basically insulation and the charge doesn't move across the nerve correctly without it)
I saw on the news his left arm raising, but someone was standing right there, so I guess they were moving it for his as part of his therapy. I knew he moved something, but I wasn't sure what it was, and the entire arms seemed like a pretty big step.