I haven't watched The Big Bang Theory regularly in a long time but I always enjoy it when I catch it in re-runs. A lot of people claim to hate it because it makes fun of "nerd stereotypes". I never found it insulting, though. Exaggerated, sure, but it's a sitcom, it's supposed to be exaggerated. A lot of the fun of the show is the characters "taking the piss out of each other" [1]. Not everyone will like that kind of humor but it's pretty common in sitcoms and a lot of people seem to enjoy it.

It seems to be common for people who dislike BBT to complain that it ridicules nerds as a class. I don't think that's right at all. Does anyone think that "Scrubs"[2] ridiculed doctors and other healthcare professionals as a general class?

[1] https://en.wikipedia.org/wiki/Taking_the_piss

[2] https://en.wikipedia.org/wiki/Scrubs_(TV_series)