These are cool

This is very cool (or at least it has kept me amused for hours)

http://www.jacksonpollock.org/

This one also in an feng shui kind of way..... Misty line is my favourate

http://www.wildcard.jp.org/


This is a neat idea also... (very imaginative)

http://two.xthost.info/ww2/lightgraffiti/