This is an artist that I knew about previously and really like. Erwin Wurm is a "sculptor" of sorts. His works usually require participants to encounter and interact with objects. He makes it clear that the objects itself is not the sculpture (he isn't pulling a Duchamp), but a person who explores the object as a prop to become a temporary sculpture. Wurm says that in order to come up and experience his work you need a kind of openness and curiosity with a "willingness to become confused." Through his work those participating transforms into the sculpture itself. The performers are then given the feeling of having become a part of a realized vision. I think that the way that Edwin Wurm looks at his art is very playful but also very understandable.
His most famous work is of his One Minute Sculptures in which various objects are supposed to be performed with specific instructions and drawings on a pedestal.
Wurm's work has also inspired many other artists. His work was referenced in the Red Hot Chili Peppers video of Can't Stop. Here is the actual music video and then the making of video as well as an interview with the artist.