I'm sure there're others but these spring to mind...
All the members of Duran Duran, Pseudo Echo, John Justin, Roger MacLachlin (Little River Band, John Farnham, Loose Change), Mark Domoney (Linda Cable, Short Circuit, Deborah Dotson, Sirens, Ashley Davies, Loose Change, Broderick Smith), Tommy & Phil Emmanuel (almost ran Phil over once! We both just laughed), Marty Kristian (founding member of The New Seekers, old buddy of my stepdad), Virgil Donati, Ronnie James Dio, Jimmy Bain...
Stories mostly too-long-to-tell.
EDIT:
Just remembered Allan Zavod. Far too much can be said about Allan, so here's the Wiki page on him:
Allan Zavod
I bought his Roland A-80 master keyboard from him and like a fool I swapped it for an A-50 3 days later. Easily one of the dumbest things I've ever done.