To bring attention to the destruction of rainforests worldwide, German environment conservation group OroVerde and ad agency Ogilvy came up with this tongue-in-cheek poster depicting the various of logging machinery "species" in the rainforest: http://acriacao.com/2009/01/19/diversity-of-species-in-the-rainforest/
my favorite one is the leggy bugger.
"don't mind me...i'm just a giant insect robot...tearin down yer enviorments"