Muhammad Ali

Interviewed by Parkinson in the 1970s, the ever eloquent boxer had much to say about black v white. Pity he's not around today for some more wry, tongue in cheek observations.

More great videos:

• Magical Entertainment: If you want to be entertained by some extraordinary modern magic, this act from America's Got Talent is definitely worth a few minutes of your time.

• Armchair Thrills: Fancy a vicarious adrenaline rush? Watch this incredible video of two men in wing suits leaping off a mountain and catching a ride home in an airplane.

• Everything is Connected: Stunning visual display of balance, demonstrating how everything affects everything else.

• What a Wonderful World: David Attenborough re-imagines the Louis Armstrong classic.