Multiple illusions in this video showing 10 optical illusions in 2 minutes (about) –

And to get an idea of how the flat-becomes-3-D works, this video shows a flat board that appears 3-D until you look at it from the side:

This clip is less than a minute long.

And more optical illusions in this video, including some 3-D chalk drawings:

The 4-min video has dozens of illusionary art examples.

You can make this yourself… using one image to create a cartoon using a masked overlay… creating movement:

Animated Optical Illusion! – Funny home videos are a click away

The video is 115 seconds long, and was found on metacafe. http://www.metacafe.com/watch/1300550/animated_optical_illusion/

A silent video that presents a puzzle, using matchsticks.

Weird Cow: Matchstick Puzzle – Funny video clips are a click away

The video is 78 seconds long.