I was building a stand in a tree one sunny afternoon, sawing and hammering away. I stopped for a water break and look up and there was a nice 8 point feeding in the soy beans 20 yards away. Not a care in the world.
Also, a few different times when I've helped my Uncle cut and split wood along the river bottom, we'd have deer walk right past us and the running tractor, chainsaws etc. One was a really nice 10 point.