As far as YouTube videos go that purport to demonstrate free energy, in my opinion they are never convincing. There is always a "hole" in the presentation, and for the most part it's not commented on by the viewers of the clip. The classic example would be all of the Perendev motor clips where as the jaws are closed down over the rotor, you see the rotor spin up. However, you never see the other side of the rotor axle, where an electric motor could be speeding the rotor up. The camera shot doesn't show the whole device when it is clear that it would be very easy to take that shot. As we know, the Perendev motor guy was busted for fraud and is now in jail in Germany. So there was an electric motor used to fake those clips.
There is so much wishful thinking and hope among a lot of free energy enthusiasts such that many suspect clips are not critically analyzed for possible ways of faking the clip. Instead, a thread gets started and then the thread takes on a life of its own. The people that want to fake clips are fully aware of this, and therefore if they are going to fake a clip they don't have to try too hard.
The 100 kilowatt power output was an extreme example of a high power output. I am pretty sure that there are other clips out there that claim between 5 and 10 kilowatts output for various free energy devices. You might see somebody show a volt meter and amp meter reading and the numbers add up to 10 kilowatts. The problem is that's all they show, which is another sure sign that the clip is suspect. 10 kilowatts is something like five electric oven bake elements running at the same time. Imagine that you bought five 2-kilowatt bake elements and you built a 5' x 3' metal cage to mount them in. Then you run your free energy experiment and after about 30 seconds you are looking through the cage at five mean oven elements glowing bright red. You would feel the heat from that from several feet away, it would almost be scary. That's what 10 kilowatts is, it's not just a volt and amp reading, it's real power.
Here is a clip that I have always hated: "Free Energy - Selfrunning Bedini Motor Replication"
http://www.youtube.com/watch?v=g9ARja0DiT0&feature=mfu_in_orderThat clip will never die, it's been hosted by who knows how many YouTube users. It looks like the setup is on a carpet floor. So you take a sewing needle and you thread two fine wires up through the carpet to emerge somewhere, perhaps behind the motor, and you are done. There is a battery off-screen that powers the setup. It's an old clip from the low-resolution YouTube days also, and so for all you know there is fine magnet wire running right across the top of the carpet, they didn't even have to go to the trouble of hiding the wires under the carpet.
The clip was probably made years ago by somebody that was selling mail-order plans for a do-it-yourself "Bedini Free Energy Machine."
Here is a ridiculous clip from some currently active con artists:
http://www.youtube.com/watch?v=WZqYZcYiEwEThere are three props used in this clip in an attempt to give it credibility, 1) a lab coat, 2) a pyramid, and 3) latex gloves. I find the latex gloves laughable, but it's no laughing matter for the people that send money to these crooks to get plans for a "free energy machine."
Personally I have never seen a clip on YouTube that looked like a credible and convincing demonstration of free energy. I have seen many clips by enthusiasts that think they have either demonstrated something highly unusual, or they demonstrated free energy. In all cases, from my perspective, they are not understanding what they are looking at or they are making incorrect measurements. I gave up looking at clips like that a long time ago.
MileHigh