I remember one night after a show walking down a long hallway about 6 feet behind Chick Corea and John Patitucci who were deep in conversation...didn't even realize who they were until I walked into them.
As far as noteworthy running into's though I like my off the bar stool near incident with Henry Kissinger better
The GRP all stars are all incredible musicians but man, what an arrogant bunch
-spence