Whitney Houston’s much-publicised rise, fall and subsequent death is a tale of an exceptional talent that was surely wasted. If like me, you knew little about her life bar the mud-slinging from the mainstream media, then British docu-filmmaker Nick Broomfield (Biggie and Tupac) and longtime associate of Whitney, Rudi Dolezal’s depiction of the troubled star, will be a refreshing take that sensitively and respectfully delves into the causes and effects of her tragic downfall. They most certainly don’t have all the answers that some people may be after but this is an essential watch for anyone with any sort of…