Improv Everywhere causes scenes of chaos and joy in public places: Created in August of 2001 by Charlie Todd, Improv Everywhere has executed over 50 missions involving hundreds of undercover agents. The group is based in New York City. (Thanx, Esel!) Link
monochrom is an art-technology-philosophy group having its seat in Vienna and Zeta Draconis. monochrom is an unpeculiar mixture of proto-aesthetic fringe work, pop attitude, subcultural science, context hacking and political activism. Our mission is conducted everywhere, but first and foremost in culture-archeological digs into the seats (and pockets) of ideology and entertainment. monochrom has existed in this (and almost every other) form since 1993. [more]