Check this thing out. I hung and wired 3 of these in our shop in June:
That's a 24-foot-diameter ceiling fan. To give you some perspective, your typical house is about 30 feet wide. They're 20 feet in the air. You can feel the air moving from these things 75 feet away.
If you're a guy and you don't say, "wow", I'd check your testosterone level.
Is it any wonder that I love my job? I get to spend large amounts of other people's money to do stuff like this.