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 simple and colorful way to get milk to move with rainbow swirls. Would it work with soy milk or other liquids? The add-in appears to be ordinary dish soap.

The video is about 2 minutes long.

Amazing sculptures that move on their own… the creator of these is probably going to be a lot more famous, but for now he may need an introduction… Theo Jansen makes these in Holland:

Strandbeast – a beast (or beest) that walks on the sand, hoping to be a viral video star! More seriously, Theo has a website where an upcoming movie is referenced – strandbeest.com.

A ferro fluid is, well, watch the video and read the description under it while you watch:

definition “A fluid in which fine particles of iron, magnetite or cobalt are suspended, typically in an oil.” (from webopedia, and they were invented by NASA. Answers.com defines it as “A colloidal suspension that becomes magnetized in a magnetic field because of a disperse phase consisting of ferromagnetic or ferrimagnetic particles. “