Okay, so I may have a bit of a soft spot for Toronto's Cundari Advertising (I did an internship with them and had an amazing summer), but I really do have to say that this is a very creative campaign. At first glance, it seemed like something zig might do.
This campaign for Dignity in Death, an organization providing information on voluntary euthanasia, takes stickers that look like brass plaques and places them on benches around Toronto as if they are memorials. Each one describes a death through suffering, and really makes you think. Very unique.