Sorry about the wall of text, but...

Having skimmed the video here are the obvious flaws.

The "helicopter experiment" demonstrates that objects moving through air experience forces that tend to make them move at the same speed as the air. Since the truck is moving relative to the air when the helicopter is launched, the helicopter will soon come to a near halt relative to the air but not to the truck. If the same experiment (modulo needing a rocket instead of a helicopter) was done in a vacuum, the launched object would stay directly above the truck as it moved vertically. As someone else pointed out, another way to demonstrate it would be to launch the helicopter inside an enclosed truck. Since the air inside the truck is moving at the same speed as the truck, the helicopter will not slow to match the speed of the air outside the truck when launched.

Saying that clouds moving proves that the atmosphere doesn't perfectly co-move with the ground is true. But it is being driven by heating on one side from the Sun and radiation to space in every direct, and by the spinning of the earth.

Show him a Crookes radiometer. They spin because of the movement of gas within the bulb caused by differential heating from a light. This is, in a grossly simplified way, what the atmosphere of the earth does as well: It moves relative to the surface because different places are heating and cooling at different rates.

Then consider hurricanes. In the northern hemisphere they always spin counterclockwise. In the southern hemishere they always spin clockwise. This is a direct result of the earth spinning and is known as the Coriolis Effect.

The effect can also be seen in the deflection of artillery. When fired facing directly north, artillery is deflected to the east. When fired facing directly south, artillery is defected to the west. This would be a very tough to explain if the earth wasn't rotating.

Another elegant demonstration of the rotation of the earth are Foucalt pendulums. As the earth rotates, the plane of the pendulum's motion appears to move in the opposite direction.

As for his idea that the earth can't be rotating because we can't feel it - all you need to do is point to the international space station. It is moving at about 5 miles per second and yet the astronauts onboard don't feel the motion at all. What people feel is the 'jerk' (actual scientific term) of motion, not motion itself. When motion is smooth and and uniformly accelerated, you don't feel it at all.