If you're a fan of chocolate, and who isn't, here is a programme just for you. Willie's Wonky Chocolate Factory (Channel 4, Sun) follows Willie Harcourt-Cooze, who is on a mission to produce the best chocolate in the world, from bean to bar and beyond.

Willie's dream is to grow his own cocoa beans from his Venezuelan farm and then turn them into premium chocolate at his Devon factory.

Interspersed with the drama as Willie risks everything to pursue his goal, the programme also features demonstrations of mouth-watering chocolate recipes, guaranteed to get all chocoholics drooling.

Twenty years after "A Brief History of Time" became an unlikely global bestseller, the author takes viewers on a journey through the universe to explore the mysteries of physics, and a look at how far our understanding of the universe has developed in Stephen Hawking: Master of the Universe (Channel 4, Mon). The series explores how Professor Hawking overcame a life-threatening diagnosis to become the most famous physicist alive and, alongside other leading cosmologists, he introduces scientific ideas that weren't even imagined two decades ago.

And now for all those budding novelists out there. Most people, if they're being honest, have wanted to write a novel. In Murder Most Famous (BBC Two, Mon to Fri) six celebrities are challenged to learn how to write a block-busting crime novel with the expert tuition of best-selling author Minette Walters. The celebrities train with the police, pathologists and firearms experts and meet real criminals and victims.

Monday will be a momentous day for the BBC as Sir David Attenborough concludes the final chapter of his epic overview of life on Earth in Life In Cold Blood – Armoured Giants (BBC One, Mon). The intimate lives of some of the largest and most impressive animals alive today – crocodiles, turtles and tortoises – are revealed in this final episode.

All of these animals are covered in thick scales that have turned into armour, yet despite their tough exteriors, they are capable of astonishing behaviour and warm-hearted interaction. Perhaps most touching of all is when a female spectacled caiman faces the onset of a drought while looking after a whole crèche of babies belonging to other caiman mothers. Their only chance of survival is if she can lead them on a migration across a parched wasteland fraught with danger.

And for those obsessed with property, as many people are, Bringing Down the House: Tonight (ITV 1, Fri) asks why some of the country's greatest historical gems being left to go to rack and ruin as Britons have made millions on a decade-long property boom.

Michael Winner recently pledged to leave his £35 million house in West London to the nation when he dies in order to ensure the architectural gem is preserved. He is among a number of concerned campaigners that believes Britain is destroying its property heritage in the name of progress.