Here is one very boring, short and wrongly recorded video of airplane propeller. It doesn’t look so weird as it could, but still it’s mildly funny.
This funny look of propeller is also known as “Progressive Scan Effect”. It happens because of way cameras work, they capture row by row of image and that creates these weird effects.
This can be seen much clear on this simulation by Hunter5625 from Imgur.
Progressive Scan Effect