One more quick addendum to my last post, re: Community and Big Bang:
I don't know if I blame Parsons or the showrunners/writers for this, but Abed is everything that Sheldon Cooper should be.
Having worked for years with special needs students, I actually find it slightly offensive how caricatured Sheldon's version of Asperger Syndrome is. He pushes it into the extremely severe autistic-spectrum realm, and couples it with OCD, making the character almost literally a circus freak. Sheldon isn't a human being; he's an outsider's view of how life must be for an autistic person, for us to laugh at.
Compare him to Abed, who is just a regular guy who has some social awkwardness, but the same level of passion (only for geek shit, instead of nerd shit). After half a season, we felt compassion for Abed in "Physical Education" because of his unconventional way of relating to women, but were shown and told at the end that, "Abed, you're a god" (- Jeff Winger).
I find it very hard to believe that after three seasons, anyone would give a shit if Sheldon were hit by a bus, because he's so damn insufferable. If Big Bang Theory was anything remotely approaching the reality of special needs intervention, Sheldon would be jobless, homeless, muttering to himself in an alleyway somewhere.
And I don't care that "it's just a sitcom, not reality," because Community has easily twice the hyper-stylized elements as BBT, yet all the characters are far more grounded.