Actually, my hearing loss did affect my acting ability. I had to know scripts inside and out to know the timing if someone was speaking on my SSD side. Fortunately (or unfortunately money-wise) my lines were generally simple and I didn't have to exchange much dialogue. It was much tougher working as Jack Nicholson's stand-in. The nosie on a set from the lighting team and the grips is incredible during scene set-up. Hearing aids ampify everything and it was impossible to sort through the nosie. I worked with Mark very briefly on Zodiac. I didn't notice that he had a problem with hearing. As far as his involvement with the AN community, I've made my cynical point before. Actors lives and personal involvement off-set are handled by PR managers. If an AN isn't important enough to them, it doesn't get mentioned. My guess, at 3500 cases a year, it's not important enough. Michael J Fox and Parkinsons Disease is a bigger issue. As I said -- cynical. But I do know Hollywood.