Jackson Hole Parasail
These guys just jump off the mountain! The drop is over 4,000 feet pretty much straight down from Rendezvous Mt. to Teton Village on the valley floor. They can soar indefinitely on thermals, like vultures. And you can pay to get strapped to one of them. I elected to save the $$ and take the tram back down, an amazing experience itself, though maybe not quite as much adrenaline involved.
The view was hazy this day with smoke in the Jackson Hole valley from wildfires not far away.