I've only just seen this post! Hope I'm not too late.....
I was the first person to fly a civilian helicopter in Armenia, a Bell 429. After a few days flying with crappy weather, the weather suddenly cleared up and the scenery was spectacular. I got to see Mt. Ararat from a perspective that very few have. And there's the rub. I have been blessed enough to have flown helicopters around the world, from the Atacama Desert in Chile to the coastline of West Africa. It has allowed me to experience things that few others have. So therefore it's pretty hard to pick out a single event. Would it be watching humpback whales breaching off shore in Ghana? Flying the entire coastline of the Ivory Coast at 500 feet? Helping flood victims in Mexico? Watching the sunrise in Oklahoma? Working in the driest place on the planet? Too many memorable moments to choose I'm afraid.