Flipbooks are part of what got me started in animation. And I have to give credit to a 6th grade teacher who had our class make a small flipbook one day in class. I went home and right away started making more. At one point I literally had a briefcase full of stickman flipbooks.

Here are a couple sample video clips of flipbooks. (it's best to just right click on the links and then download them.)
Droopy
Hotdog
The Two-Headed Guy

 

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