Fluxus movement

The Fluxus movement is a precedent to the work of Erwin Wurm and an important development in Performance Art.

Wikipedia, Relevant extracts
http://en.wikipedia.org/wiki/Fluxus

"They took the stance of opposition to the ideas of tradition and professionalism in the arts of their time, the Fluxus group shifted the emphasis from what an artist makes to the artist's personality, actions, and opinions. Throughout the 1960s and '70s (their most active period) they staged "action" events, engaged in politics and public speaking, and produced sculptural works featuring unconventional materials. Their radically untraditional works included, for example, the video art of Nam June Paik and the performance art of Beuys. The often playful style of Fluxus artists led to their being considered by some little more than a group of pranksters in their early years. Fluxus has also been compared to Dada and aspects of Pop Art and is seen as the starting point of mail art. Artists from succeeding generations such as Mark Bloch do not try to characterize themselves as Fluxus but create spinoffs such as Fluxpan or Jung Fluxus as a way of continuing some of the Fluxus ideas in a 21st century, post-mail art context."