Rush lived rent free in a lot of minds. The main reason he was so popular was that he tweaked the other side day after day with a dry wit.
Many tv shows have had versions of Rush be stalked by a psycho, show up in an ER with a bad heart, or other thinly veiled attempts at showing some evil right wing radio show host who always "learned his lesson" before the show was done.
He was definutely a polarizing figure in America. I suspect he was having fun poking the bear until the very end.
'If people are speaking about something passionately and if they have a level of intelligence about it and if they're sufficiently informed, it's going to be like a magnet to people.'
- Rush Limbaugh