I stopped and had a chat in the street with Kevin Rowland of Dexys once, very pleasant man. We spoke about their music since their first album and he told me in detail about what was then their imminent release of old Irish songs. We parted essentially as best mates.
Few days later I came across Mike Scott from The Waterboys and encouraged by my new found friendship and ability to easily mingle with bona fide rock stars I approached him. I think he was genuinely frightened. Bit weird too if I am honest.
Sober both times and all.