Wow. I had forgotten some of these. In Canada we heard these, too. The John Denver one was told to me by a pioneer who had just returned from Bethel. She claimed she was at the concert and he refused to start until all JW's had left the building.
I heard the JW vs Avon lady one way back when. Also heard about Don Ho - that he hated Witnesses and wouldn't have them at his shows.
My super-dub pioneer aunt told me the one slimboyfat recounts, except I heard it as some freak at the door who was acting all demonic and said that the demons were out to get all the JW children (it really freaked us out). The same aunt told a story about Malawi, after the JW intensive letter writing campaign, how the high bishop had been arrested and strung up by his hands and was punished for hurting the JWs.
My aunt also told one about how in the early 70s the GB tried to arrange international conventions all around Europe for 1975. They found everything was completely booked everywhere they went. When they went back and instead tried to book for 1974, suddenly all the venues were free.
I heard one, too, about a circuit overseer and his wife who visited a tribe in remote Africa and who were tormented by demons all night long in their tent and how they only way they survived was by saying the name of Jehovah over and over again. Blood in food products was a biggie: we weren't allowed to eat red licorice for that reason.