The World Of Nat King Cole isn't a mere collection of performances, as this DVD's understated presentation would suggest, but, rather, a fascinating and highly detailed documentary on the life, career, music and influence of the jazz pianist and singer. The film relies on a range of crucial spokespeople - Isaac Hayes, Whoopi Goldberg, Stevie Wonder, B.B. King, Harrys Belafonte and Connick Jr., Cole's wife and daughters and a very wide range of historians, industry insiders and personal friends - to tell his story, which includes loads of wonderful details, like Cole learning piano on keys drawn on a windowsill. Following his story, the personalities help convey the narrative of jazz itself in relation to American history, seeing the music as "the hiphop of its time," as one journalist puts it here. Forget the bounty of uncut extras; on its own, this documentary is well researched, continuously engaging and occasionally endearing. A powerful piece of work about a figure who deserves nothing less.