Working in an isolated Northern hunting camp with some cartographers mapping a hydro project, when a GPS receiver was the size of a suitcase and required a tripod, dish and at least three hours to collect enough data to be any use, after you told it where it was. These guys were all engineers. They were having one of their nightly computer issues trying to make sense of the days data, when the camp caretaker, an old guy in tattered clothes with a white beard to his bellybutton, the guy I just asked for another cord of wood, offered to help. Ammused they told him sure. To our amazement his fingers danced across the keyboard and he had everything sorted in a few minutes. Turned out he was a former professor at Cal-Tec, and helped design the ICBM guidance systems at Linton.
Also, strutting out of the can at the FBO in my flight suit after another heroric medevac (gas pains I think), my shiny 222 out on the ramp, I see this tiny airplane parked next to us. Piping up, "whose is that tiny thing?"
An larger, older fellow steps up beside me, claims it's his "tiny thing". Turns out he's a CEO of a major corp. and flew F14's for the US Navy, out on a fishing trip with a buddy.
Stay tuned, I'm sure to stick my foot in my mouth again shortly, its been awhile.