What famous people have you seen IRL?

In Toronto I ran into Styx at the airport.

I mean it literally. I bounced off Tommy Shaw and kind of reeled into James Young. (Totally my fault.)

They were actually really nice, checking if I was OK and once it clicked who I was talking to, putting up with my squeeing fangurl behaviour. Both of us were waiting for our respective flights so I got to talk with them a good half-hour before my flight started boarding.