Journalist Zing Tsjeng and BBC business editor Simon Jack uncover the huge public feuds and private legal battles that made the most famous woman in the world. She can change the economy, but is Taylor Swift good, bad, or just another billionaire?

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How Warren Buffett became the richest investor in history, amassing a fortune of over $120 billion, without moving from the Nebraska home he bought in 1958.

BBC business editor Simon Jack and journalist Zing Tsjeng discover how Buffett earned his first money as a six year old, bought his first shares at 11 and filed his first tax return at 13. He went on to formulate his own investment philosophy on the way to becoming incredibly rich.

Simon and Zing reveal Buffett's biggest deals and pithiest phrases from his decades of investing, as well as his unconventional love life. Then they decide if he's good, bad, or just another billionaire.

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How NR Narayana Murthy, now known as the father-in-law of UK Prime Minister Rishi Sunak, first became known as the father of India's IT boom.

Journalist Zing Tsjeng and BBC business editor Simon Jack explain how Murthy made Infosys, the technology company he founded with six friends and some cash borrowed from his wife, a world leader in outsourcing.

Simon and Zing reveal how 20th Century Indian politics, an early passion for computers, and a shocking experience behind the Iron Curtain all played a role in making Murthy spectacularly rich. Then they decide if he's good, bad, or just another billionaire.

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How Rupert Murdoch inherited an Australian newspaper and turned it into a global media empire. BBC business editor Simon Jack and journalist Zing Tsjeng tell the origin story of the 92-year-old media magnate. He’s been called ‘evil’ and ‘a cancer’; for others, he’s the champion of the free press. He’s also one of the most powerful people on the planet. So which Rupert Murdoch is it: is he good bad, or just another billionaire?

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The story of Mexican drug lord Joaquín Archivaldo Guzmán Loera, better known as El Chapo, the leader of one of the world’s most prolific, violent and powerful drug cartels.

BBC business editor Simon Jack and journalist Zing Tsjeng follow El Chapo from childhood in the Mexican mountain region of Sinaloa to the very top of the drug business, and into the New York prison cell where he now resides.

Simon and Zing reveal how El Chapo innovated with tunnels along the US-Mexican border, escaped prison twice, and used extreme violence to gain power. Then they are given the simple task of deciding if he's good, bad, or just another billionaire.

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How hip-hop’s first billionaire went from grams to Grammys. Journalist Zing Tsjeng and BBC business editor Simon Jack chart Jay-Z's meteoric rise from drug dealing in the projects to sipping champagne in a private jet. Jay-Z turned his aspirational lifestyle into cash, rapping about the champagne that he owned. And the private jet? A gift from his wife, Beyonce.

In the podcast that uncovers how the world's wealthiest people made their money and asks if they are good or bad for the planet, Zing and Simon judge the man who shot his brother, who signed Kanye West, whose adultery gave use Lemonade, and who has been called the greatest rapper of all time.

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How did being fired from Wall Street lead Michael Bloomberg to a $96 billion fortune and a failed presidential campaign? Journalist Zing Tsjeng and BBC business editor Simon Jack try to understand this man of contradictions. A brash playboy and thoughtful data nerd, a lifelong Democrat who became the Republican mayor of New York, a plutocrat who spent $1 billion self-funding a short-lived presidential campaign, and one of the world’s greatest philanthropists.

In the podcast that uncovers how the world's wealthiest people made their money and asks if they are good or bad for the planet, Zing and Simon judge a man whose eponymous Bloomberg terminal sits on desks throughout the financial world, and helps make people incredibly rich.

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Why was biotech billionaire Patrick Soon-Shiong sued by his brother... and Cher? BBC business editor Simon Jack and journalist Zing Tsjeng trace his journey from apartheid South Africa to the upper echelons of LA society.

He’s tried to cure cancer, diabetes, and Covid-19, and along the way rubbed shoulders with some of the most powerful people on the planet: Joe Biden, the Pope, and Donald Trump. He's made his fortune selling drugs to sick people, but his results have been described as "controversial", "hype" and even “old wine in a new bottle”.

In the podcast that uncovers how the world's wealthiest people made their money and asks if they are good or bad for the planet, Simon and Zing judge a man who made cold hard cash from controversial cures.

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Microsoft boss Bill Gates spent more than a decade as the richest person in the world, after becoming the youngest self-made billionaire in history.

Journalist Zing Tsjeng and BBC business editor Simon Jack follow his journey from venerated, nerdy entrepreneur to ruthless monopolist, then from generous philanthropist to conspiracy theory magnet and divisive public figure.

The podcast that uncovers how the world's wealthiest people made their money and asks if they are good or bad for the planet reveals the brilliant technology, the crucial deals, and the legal difficulties along the path to building a software empire.

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The spectacular rise and incredible fall of crypto empire FTX and its unconventional founder, Sam Bankman-Fried - a billionaire wannabe philanthropist now facing decades behind bars.

Journalist Zing Tsjeng and BBC business editor Simon Jack could not resist inviting special guest Michael Lewis (author of Liar's Poker, Moneyball and The Big Short) to tell this story. Michael was at the scene as Bankman-Fried's crypto trading business crumbled and the law closed in.

They trace his life from childhood in Californian academia through his rapid accumulation of wealth – surpassed only by the speed at which it was lost – and on into his prison cell. Then they decide if he is good, bad, or just another billionaire.

This programme was edited on 4 December 2023 to correct a factual error.

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To find out more about the show and read our privacy notice, visit www.bbcworldservice.com/goodbadbillionaire