A few weeks ago I went to MASP (São Paulo Museum of Art) to see an exposition of Vik Muniz works.
His work is amazing. He is a Brazilian artist who lives in NY for about 20 years (I think) and his art was already exhibited (sp?) in lots of places around the world.
He makes art from/of everything. No matter if it is sugar, chocolate, or garbage.
You might recognize some of works:
(Click and see with what this was made:)
This was made with chocolate!
Made with sugar!
(Click to see the details)
Oficial Site: http://www.vikmuniz.net/www/index.html
Anyways, if you have the opportunity to see his work- go for it. It's an amazing experience.