Hi all: Open Source folks are always upto some interesting way to visualize the stuff.
Pascal has created a 3D movie of linux kernel evolution which shows how the source code development has evolved. Download the movie : A guided tour of linux 2.4.5 http://www.pabr.org/kernel3d/245.mpg Here are the points to keep in mind, while viewing the movie . Grey boxes are files. . Green tree is the directory structure. The two main hubs are "fs" and "net". The "drivers" tree is not rendered. . Blue lines are function dependencies. . Red lines are variable dependencies. . Yellow flashes show file size modifications. . Green flashes show files being moved across directories. . Red flashes show new files. Please take a look at http://www.pabr.org/kernel3d/kernel3d.html thanks Saifi.

