Decades after his rise to heavy metal fame, the self-styled Prince of Darkness, his wife Sharon and their two then-teenage children Kelly and Jack starred in MTV's The Osbournes, pioneering what the show's producers describe as a "reality sitcom".

It’s a relatable problem: not understanding your dad. Yet there was Ozzy Osbourne on The Osbournes, the dad who was literally unintelligible. TV history is rife with generation-defining families. You can chart the evolution of our society by the ones who were popular during different eras,