Graham Norton has a house near where my sister lives. I've said hi to him a few times. Nothing special.
I also met Jeremy Irons with my family outside of his big orange castle when I was younger. He was just after renovating the place and moving in, so my mum made us sign a welcome card.
I don't remember it very well. I think I shook his hand at some point.
SO INTERESTING
EDIT: Oh yeah, and I guess I had a book signed by Darren Shan when I was like ten.
I got nervous and started babbling. He didn't seem to mind, though.