The Do Hit Chair by Marijn van der Poll is aggression meets customization in design. You basically bang the heck out of a sheet metal cube with a sledge hammer to create your own custom chair. While I can't imagine that this is a pleasant and comfortable seating experience, I can certainly see the benefits of banging something vigorously. I say maybe you sit on it or maybe not but it might not hurt to have something around that you can use for stress relief. Available from Droog
Other pieces from Droog that caught my eye. I will have to stop in to New York store next time I am in town.
Godogan Table by Niels van Eijk and Miriam van der Lubbe
Knotted Chair by Marcel Wanders
Chest of Drawers by Tejo Remy
Mat Walk Bathroom Mat by Paolo Ulian
Thonik Retrospective Wool Rug by Thonik