As browsers get stricter and stricter about unsigned applets, it's getting harder to host Processing animations, so I'm converting some of my faves into P5. Meanwhile see some Processing stuff on openprocessing.
As part of the Cultural Olympiad in 2012, the roofs of some bus stops in London were converted to show LED animations. I submitted these animations, two of which (the first and third) were chosen for display. All are in Processing except for Incy Wincy which I drew frame by frame.