I only watch a couple of TV shows on a regular basis. Currently the only ones I can think of are Lost, and a longtime favorite, CBS' Sunday Morning. There was a really interesting story this morning on artist Julian Beever, and his 3D sidewalk art. The only "real" thing in this one is the artist himself.
The work needs to be viewed through a camera lens in order to get the full effect. Even though it's just chalk on a sidewalk and it will be gone as soon as it rains, because the real art is the photo of the drawing it lasts forever. The pictures are amazing, but I would love to see his work in person. My favorites are any that have water in them.
It's hard to believe that these are just ordinary, flat sidewalks.
You can see many more on the artist's webpage.