boarded PVG-EWR once. when stowing my luggage i realized i dropped my wallet at another gate i was waiting at. i couldn't get off the plane unless they unchecked everyone's luggage to get mine, didn't want to be that guy.
station manager was notified and quickly got on the plane, took down my info and when i landed at EWR i got an email saying they found it and will be on the next flight to EWR.
that was pretty awesome and a very welcome surprise.
figuring out who the heck had it at EWR and how to retrieve it though, that was pretty much a circus. but i eventually got it and counted my blessings.