Hmmmm. I sat at restaurants next to Tom Green, Ben Stiller in LA and Ellen Mirren in New Orleans. I also vaguely remember sitting next to the bloke who pulls the paper from the typewriter at the end of the A-Team.
When I lived in Croydon, the bloke who played Nigel in Eastenders ran into me coming out of a news agents. He was a clumsy pube head and didn't say sorry.
This building in Croydon:

When driving with my wife on an early date in Laguna beach, we almost ran over Freddy Kruger (Robert Englund) at a crossing. Serves him right for scaring me witless as a child.

Um. That's all I can remember for now.
Oh, I'm the lead artist and responsible for artistic direction and stylings on a big video game francise, but that stuff is very boring.
Oh, and I've had dinner with the Queen. Twice. And she's a lousy cook.