I suppose for me it's various Doctor Who personnel due to my peripheral involvement with the "franchise" - Sophie Aldred, who was lovely, and Tom Baker, who didn't disappoint as he was mad as cheese. (My mum also taught him French for a while.) And the luuuuurvely Nicola Bryant who has a dazzling smile!
I was in the company of Will Self for a while at a book do. He didn't really say anything I remember.
Mine aren't especially stellar, so I hope for more from you lot!! No glancing encounters - proper conversations only!