I get asked all the time to evaluate some work or another on whether or not it does disability "right". This is a bit of a problem, of course - despite having opinions (a lot of them, according to someone in my thesis course), I haven't always seen the work in question. Also, my tastes don't run mainstream - if I've liked a movie, it probably tanked at the box office, and not because it was arty and pretentious.
After a few times of being asked what made disability in pop culture look "right" to me, I made a short list. This list isn't about acting, but on writing and presentation.