Getting airborne from an airfield somewhere in Norway in 10M vis before an engine failure just after TDP
Oh wait, that was the sim...
Most memorable moment in an acutal helicopter - probably nearly getting speared by a pair of F-15s while flying a Jet Ranger up Glencoe...
There we were, bimbling along at 100 knots, soaking in the scenery. What a lovely day it was to be airborne over the glorious Scottish countryside instead of indulging in some mundane ground-bound pursuit.
Half a second later, two of Uncle Sam's finest death machines appear from nowhere - one flashes above, one below, followed by the aroma of jet exhaust wafting into the cockpit. There wasn't really time to do anything apart from hope there wasn't a third one lurking round the corner.
Fortunately I was wearing my bicycle clips that day
Honourable mentions to flying with friends and family, seeing an EC225 getting towed along by an offshore supply boat, watching the Northern lights and landing in places where you are the sole indicator of any human existence all the way to the horizon.
Got to love it.