The first names that come to mind have political associations.
Jock Garden would perhaps be my first guest - an interesting character who lived through possibly the most turbulent times in NSW politics (I was tempted to include Jack Lang, but I think not, as he would end up dominating the entire evening). Jim McClelland and Billy Hughes would be on the list too - both of them great story tellers.
Getting away from politicians, Charlie Chaplin could be an interesting and amusing guest, and I would love to meet Margaret Olley.