Nah, not much.
I get recognized by some members of Calexico by now, but that's because I go to every concert they give in the Netherlands (that's about on every year).
I once drank a beer with the singer of Jaya the Cat, but that's not all that exceptional.
Nothing like shaking Dr. John's hand (altough it could be very well that more people here have heard of Jaya the Cat than of Dr. John. Got to love Gris-Gris
)