Took me far too long to answer this (I'd forgotten about it).

Sam Neill I've been in close contact with twice - he was at a film premiere in Sydney years ago (I told him I loved him as the Cat Burglar in The Simpsons, which had been on the night before), and again at a tribute evening a couple of years back.

It was Jason Isaacs. I've been licked by someone who licked him, and know a couple of people who have met him, but never myself.