Here’s a very awesome set of stop-motion animation videos found via w00kie’s ramblings. First off is PikaPika the Movie:

The creators of the animation describe it as the following:

We took a photo of each image using long exposures and put them together to make them look like one animation.

To work on this project,we went out to various places in Japan:parks,under the train track,the Tokyo Bay,school hallways,and so on.

We got all sorts of friends in different fields together to work on this project.
During the process,they got to know each other and discover new things. This is also about “communication”.
People can meet new friends as they create a piece art very easy which brings every one happiness.
We spend a very enjoyable evening at the workshop and the party through this animation.

In other words, a series of long exposure photographs of people waving around lights are combined to create very cool abstract animation, bringing happiness to all.

A clip that gives us a behind the scenes look at how the above clip was made:

An older PikaPika video from 2007:

More PikaPika videos can be found at their official blog!