The guy with the car just makes me cringe, sometimes I get nervous under a vehicle with 6 ton jack stands holding it up.
i have done the first pic when i was younger, trailer then saw horses with a plank, then an extension ladder on that. Had to reach the top of the chimney.
Once you've seen Chinese Acrobats perform with their chairs, you'll understand why people think it's alright to do it themselves!
That reminds me of stuff my brother would do. He's a field tech for a company that installs and maintain signs, he says he prefers to wire them up hot, and get's shocked often because of that. He's been knocked off a ladder a couple times when he got hit by 480 volts! I'm hoping he wises up when he gets into his 30's.