The many helicopter rides to places that humans rarely ventured.
Landing at a hot spring after field work in the Aleutians, and soaking for a few hours, butt naked, then running about 50 feet to the Bering sea and skinny dipping in the 35F surf. Then dash back to the hot spring for more soaking. Repeat until satisfied then fly back to base camp for King Crab legs sauteed in beer and butter. Washed down with beer.
I tell ya, that was rough, and got paid to do it.
At w*rk in my field office in 1996 Summer:
And I still have the Gortex jacket and hat!