I know people who act exactly like the characters on the show (and the Sheldons are as clueless about it as he is).
Same here. That's why I don't get it when people say that it's just making fun of nerds or portraying that sort of culture inaccurately, because from my perspective working at a university and living with someone who was in a PhD program in Physics, the show is dead on. It's so funny to me because there is so much truth in it, kind of the like the first few seasons of The Office (before it got too detached from reality). The jokes make sense and are hilarious because these things happen in real life, and the real life "characters" are just as clueless about it, as Carcazoid