I saw that on the news at lunch-time, and it made me wonder how on earth someone like him could cope with Parkinson's. I didn't really know very much about Limbaugh before this, but I think now I know enough not to like him. What things people do for media attention.

I think that perhaps Michael J. Fox was perhaps shaking a little more than usual on that advert due to the fact he was concentrating hard on delivering the speech to the best of his ability, and I see no harm in that.