I've been chased by moose and run into bear, but by far the worst wildlife encounter I've had in AK was getting crosswise with a nest of enraged wasps. It was on a woodlot up in the Willow area just after an early freeze. It was rainy and muggy and I was going around doing a cleanup prior to winter, gathering dead wood, cutting down some iffy spruce, etc. I ran into a nest of these guys while just walking along and they went completely crazy. Thankfully I was wearing heavy carharts so they only got my hands and one or two on my face. I got stung over a dozen times and my hands swelled way up. They were completely insane. Everytime I crushed one he'd just turn and nail the palm of my hand in his death clutch. Everytime I looked down there were more and more on me, like killer bees or something. I guess the freezing temp and rain had upset them. I ran like crazy and splashed kerosene on myself, which seemed to help get them off. Though if I'd been near fire at that point I would have made the Darwin awards for sure.
So now, I RUN LIKE CRAZY from them. They scare me more than any bear. And the bear also run like crazy from them, BTW. Those ain't no honey bees.