I'm normally a bit of a lurker, but saw a thread where a poster had a best friend who was famous and it made me think about famous people I've known/met. So thought I'd ask - all lighthearted!
I met Ashley Banjo when he was a kid (I'm older than him) so I think he was about ten and I was a teenager, I was involved in theatre/dancing and dance shows and came across him once or twice. He was quite short at the time, so very different to now 
I used to be friendly with Tom Hiddleston before he was famous.
I literally walked into James Macavoy once
, he was very nice about it.
That's it!
Anyone else?