I'm quite friendly with a very well known (and quite private) guitarist. We do a few charity gigs during the year, and he and is wife were recently round for dinner with a few others to discuss this years events.
Through him I've met David Bowie, Phil Manzanera, Guy Pratt, Mike Rutherford, Pete Townsend, David Crosbie, Graham Stills, Eric Clapton, Jules Holland, Sam Brown and a bunch of others. All were very nice, friendly people - happy to chat, etc, apart from Mr Holland who was a bit of a grouch. None of these would be friends, just aquaintances, although I've played with Phil and Guy a few times.