The portrayal of Asperger's is pretty good, so for some Aspies it can be an eye-opening look at how other people experience them.
The "Dumb Adam" scene.
What an Idiot!: Adam doesn't even try to explain himself while waiting for Beth outside the school where she works, resulting in the police assuming that he's a pedophile and holding him at gunpoint. Sure, Aspies sometimes have difficulty expressing themselves, but again. He doesn't even try.
The Woobie: The film plays up the idea that Adam's life is sad and complicated.