This book introduces readers to the iconoclastic work of the French media artist Fred Forest. A pioneer in the fields of video art in the 1960s and internet art in the 1990s, and cofounder of the Sociological Art Collective (1974) and the Aesthetics of Communication International Group (1983), Forest is best known as an ironic media hijacker and tinkerer of unconventional interfaces and alternative platforms for interactive communication that are accessible to the general public outside the exclusive precincts of the art world. He has also made headlines as an outspoken critic of the French contemporary art establishment, most famously by suing the Centre Pompidou in 1994 over its opaque acquisitions practices. This book surveys Forest’s work from the late 1960s to the present with particular emphasis on his prankster modus operandi, his advocacy of an existentially relevant form of counter-contemporary art―or “invisible system-art”―based on the principle of metacommunication (i.e., tasked with exploring the “immanent realities” of the virtual territory in which modern electronic communication takes place), his innovative “social” and “relational” use of a wide range of media from newspapers to Second Life, his attention-grabbing public interventions, and the unusual utopian dimension of his work. Never a hot commodity in the art world, Forest’s work has nonetheless garnered the attention and appreciation of a wide range of prominent intellectuals, critics, curators, technology innovators, and fellow artists including Marshall McLuhan, Edgar Morin, Vilém Flusser, Abraham Moles, Jean Duvignaud, Paul Virilio, Pierre Lévy, Pierre Restany, Frank Popper, Harald Szeeman, Robert C. Morgan, Vinton Cerf, Roy Ascott, and Eduardo Kac.