I had a cool spider-related experience in the desert in New Mexico once. I was on guard duty (Army), in the middle of the desert, just me, nobody else within a quarter mile. I heard, like, a deep bzzzzz and I looked around and saw this big ass wasp buzzing over the dunes nearby. I stood up to get a better look, just in time to see the wasp attack a tarantula scuttling across the desert. There was a lot of insect and arachnid limb-flailing, and at the end of it, the spider was paralyzed, with the wasp on top of it. I'm pretty sure the wasp laid some eggs in the spider then flew off, to leave its eggs to hatch inside the paralyzed spider and eat it from the inside. Pretty cool, those wasps!