I was working on a project in Stockholm in the early 2000s staying at the Sheraton (I think) in the city centre. Arrived back from work really late and we couldn't get near the hotel for crowds of people. Eventually we managed to get through the crowds and through security. Went into the bar for a beer and Iron Maiden were in the bar drinking cups of tea and being as far from Rock and Roll as it was possible to be. They were charming, polite and very friendly.
On the same project, I was working at Landvetter airport and one of the forklift drivers was rumoured to have been an early member of Europe, although not much evidence was forthcoming. He had long hair, always wore a black t shirt and could tap out a decent rhythm on his steering wheel so that was good enough for me.
I also shared a flight back from Cape Town with the Corrs and Annie Lennox following the 46664 festival in 2003. I was in business class with them. The Corrs were lovely (apart from Jim who seemed to resent the fact that everyone fancied his sisters). Annie Lennox was rude and obnoxious to her kids, staff and fellow passengers.