Kutcher became That '70s Show's breakout star, making a name for himself in the comedy genre by starring in a string of funny flicks like What Happens in Vegas (2008), Killers (2010), and No Strings Attached (2011). He's also sunk his teeth into more dramatic roles, including The Butterfly Effect (2004) and the 2013 biopic Jobs, in which he played the infamous Apple founder.

He returned to the small screen in 2011 when he joined sitcom Two and a Half Men, and more recently starred in Netflix's The Ranch.

And Kutcher doesn't just rely on his acting career to boost his fortune. A savvy venture capitalist, he's the co-founder of A-Grade Investments and has poured cash into a range of start-ups. His staggering fortune is tipped to be worth around $200 million (£168.5m) – who's laughing now?

Now discover how much the cast of Cheers are worth today

The cast of That '70s Show, then and now, ranked by net worth