architectural graffiti

Seen on the streets of Lisbon, artist unknown, but apparently a fan of Niemayer, Utzon, Zumthor, and OMA. And maybe Space Invaders. See them all here.
Ganked from SpaceInvading

wii graffitii

the future is here. in another example of a haptic device bringing user-generated actions to the small screen, students at the bauhaus have created a wii-based game that simulates the act of spray-painting. the graffiti game uses the wii-mote as a spray can so the user can "paint" the surface of the monitor. ganked from oobject. see more haptic controllers here.