The most outrageous stoner flick of the year is also the grossest. Eli Roth headed to the Amazon jungle for this story about a bunch of naive eco-activists who are captured by a tribe of headhunters. One's a stoner who's turned into a cannabist corpse of sorts, getting the tribe high and allowing fetching lead Justine (Lorenza Izzo) to escape. Cannibals and cannabis – what a concept! Watch the trailer here.