It's a really good movie; even though I have (mild) Asperger's syndrome rather than "classical" autism I still found I could relate somewhat to Temple Grandin's life as portrayed by Danes in this movie. I remember one scene that stuck out for me was her nervously tapping her foot while seated at her aunt's table, very early on in the film...I pointed at the screen and said "I do that!!"
One thing my parents noted is that with Temple Grandin (as Danes plays her), the other characters in the film could tell right away that something wasn't quite right with her, and that more sensitive people might give her a break...whereas for an Aspie like me, who, for all intents and purposes looks/acts (superficially) "normal"...well, that's why it's sometimes called an "invisible" disability.
I try very hard not to judge or feel superior to those on the spectrum more profoundly affected than me. Being mildly affected has its own pitfalls and dangers, and means I'm more likely to be swept up into NT social circles...I sometimes like to say that while they are dancing their "Viennese waltz" of the social dance, the most I can manage is a Texas two-step...it works some of the time, but doesn't *really* fit the music, and starts to stand out after awhile...