Here's a couple impressive flight-related videos.
First, consider this TED demonstration that shows what happens when you mix fancy math, with fancy hardware and fancy software. The results are nothing short of stunning:
Seriously, I found myself holding my breath as he demonstrated various athletic capabilities of quadcopters. And you've got to love the reference to Skynet the host made. Back in college I remember struggling through a differential equations class; maybe if I had know that one day that experience would have allowed me to build unbelievable cool drones, I would have gotten more out of the course. Though, probably not.
On the low-tech side, my Dad sent me over this video of some folks in Thailand having some sort of rocket-festival-thingy:
Up close, the structures look massive and clunky. Yet, sure enough (some of them) fly quite well. I'm not sure I'd want to be one of the guys running around explosives with a 10 foot torch like object, but it sure looks like everyone is having fun.
Finally, this is one of my favorite aerial photography videos on YouTube because it's just so dang simple. Buy a whole bunch of helium balloons, dangle a camera from below, and you've got an aerial photography rig. Check it out:
Every day we creep closer to the inexpensive photography drone, that I can't wait to make part of my kit.