Ok, so I was quite taken aback by the depraved scenes of sexual violence, they didn't go overboard with the visual so that made it a little tasteful, just the thought was enough to make me squirm. the film is disturbing and I'm still thinking about it regularly. Some scenes were quite obvious as a set up for a blood splattering gorefest which is all what we subscribed to Shudder for right? lol people complain too much about the lack of plotlines in zombie-esque movies but I thought the love story was quite believable for two 20 somethings living their day to day non eventful lives. The thing that traumatized me the most was the faces of the infected, those creepy grins bring back memories of being a child of the 90's watching Soundgarden's Blackhole sun MV...if you know, you know. I'm still scratching my head over the title name. The Sadness? I mean the perpetually gleeful infected look nothing but sad however their reddened faces look as though they were crying and do shed a tear before they turn, hence that being maybe the final flicker of humanity before they eventually succumb to the virus. It is the scariest and most disturbing movie I have seen in this genre of horror, having said that I don't enjoy horror much at all unless it involves zombies, I thought the special effects and gore was extremely believable, would recommend, kind of like 28 days/weeks later but on crack!