It’s important to understand that we all have our own biases. So before I discuss the new documentary 20000 Days On Earth, I feel it is important to establish that I’m a firm believer in Nick Cave and the strange, almost Lovecraftian shape his career has taken. From the apocalyptic noise of Birthday Party to last years pretty excellent  Bad Seed’s release Push The Sky Away and all of the films and novels in between, Cave has taken a journey filled with drugs, violence and religion which is just screaming to be explored cinematically. Anything that can give me more…