Tim Noble and Sue Webster are a dynamic duo based out of the UK. Using everyday things including rubbish, they've taken the idea of assemblages to a new level of transformative art. The sculptures use everything from trash to bones; one of them is even constructed from 34 taxidermied animals including 6 rats, 1 mink, 8 carrion crows, 8 rooks, and 11 jackdaws. Gruesomely awesome.
(via http://www.juxtapoz.com/current/shadow-sculptures-by-tim-noble-sue-webster)