It's hard to know where to begin with Danish artist Peter Calleson, but since I have been showing you performance art I'll start there.
The Wishing Chair (above) was placed outside the Nikolaj Tower in Copenhagen with instructions to sit down and utter your wish out loud. His goal was "to create an interactive and poetic situation, leaving the audience to consider their wishes, with the possibility of having their wishes fulfilled" The artist was high above in the tower armed with a baby monitor (so he could hear the wishes), small parachutes, little boxes, paper and pen, and various small objects. From his perch on high, he would create answers to the wishes and parachute them down to the recipient.
But what really got me started with him is his papercut art.
I couldn't pick just one.