There was also South Park's episodes 200 and 201 where they got a slew of death threats for depicting Mohammad. Funnily enough, Mohammad's depiction was the least offensive of all the other religious figures they showed in that episode, which was basically the point of the episodes more or less.
The funniest part of it all is that the network decided to not only remove the episode after the initial airing, it even censored Kyle's speech at the end of 201[1] about fighting back against intimidation. The censorship was done in such a way that it looked like South Park was satirizing the censorship itself too [2].
[1] https://www.youtube.com/watch?v=8TMHIYDHMSE
[2] https://www.youtube.com/watch?v=Imj_pHXzJbc