I am reading it right now. I am only about a quarter of the way through (but I did read the ending, and the summary on Wikipedia). So far, I think that, while SOME aspects are realistic, Jacob is a LOT lower functioning than a realistic Aspie. I will give props to Jodi Picoult for actually doing "field" research and observing Aspie kids and their families - but the problem is, they were kids. An Aspie KID (or a full-blown autistic adult) might have a meltdown in a grocery store - but it really isn't likely that an Aspie adult would. (I know I certainly wouldn't - I would probably just sigh sharply, if even that, and be thrown into a funk for a few hours, but no temper tantrums .)
I also think Jacob's mom babies him - I think that she makes too many excuses for his behavior. I think if she had treated him like a "normal" kid, and held him accountable for his actions, he would have been a lot farther along, and maybe wouldn't have even been accused of murder. Yeah, it probably would have been tougher (read: a LOT more meltdowns), but honestly, that's life, and everyone, even us autistics, have to learn that it isn't always easy. If my mom and I had driven to the grocery store, and I didn't like the color orange, and the only spot was next to an orange car, my mom probably would have parked there and told me to get over myself. There's actually a name for this technique: exposure therapy - it's used for OCD, but I've found that it also helps with some of my autistic stuff (such as forcing myself to go to noisy, crowded places - I can deal with them a lot better now). Oh, and what is it with all this color sensitivity stuff? I don't have any, and nor does any other Aspie I know (and I know a lot!)
That being said, apart from the Asperger's bit, the book is very well written, and I'm glad that one of the narrators is actually the autistic boy himself. I know that Jodi Picoult is a good writer, so I am going to give this book a chance, and I'm going to finish it.
I agree, it probably would make a good movie plot, and that is a good point - it would be nice to have an Aspie movie that ISN'T Rainman or a romantic relationship. But does it have to be about a boy who is accused of murder? I can't imagine it helping public perception of Aspies.