I came across this interview with Paul Morley (among other things, he designed the "Frankie says..." t-shirts), who says that Lou Reed was his most difficult interview. Listen to what the man says:
Q: Who has been most difficult to interview?
A: Lou Reed. I had to go through a series of auditions before he approved me to interview him. This was in 1979. He hated the music press and gave me 30min and he timed it. Halfway through a question, he picked up his watch and walked off. It's tough to meet one of your heroes and to have them be surly and horrible to you. I understood in the end. I was just there to do an interview but people such as Reed are aware that if they say something that might be interpreted in the wrong way, it will last forever.
Isn't it interesting that Morley was mad because Lou Reed gave him the amount of time he had agreed to give him? What a jerk musician! Sometimes I think rock journalists don't really understand how unimportant most musicians find them. Of course, they only think that after they become successful, but still. Anyway, it sounds like Morley has come around to Lou Reed's way of thinking, which is what we all will do eventually.