"The stage fright I experience is the nearest thing I get to crossing a border with half a tonne of cannabis. I must be still addicted to that adrenaline rush it gives you."

As the man responsible for smuggling the majority of the cannibis that made the Sixties the Sixties and the Seventies the Seventies, Howard Marks is a counter-cultural legend.

Using the convoys of rock bands from Pink Floyd to Genesis for transportation, he shifted 30 tonnes of the stuff from Pakistan to the US, employed 43 aliases and 89 phone lines and did seven years at Indiana's Terre Haute Penitentiary as a result.

But it's the non-stop career since his release from prison that provides Marks with his greatest case for legalisation of the drug.

Having good-naturedly puffed his way through book deals, television appearances, political debates and now live comedy shows, you couldn't accuse Marks of being lazy, aggressive or stupid.

Like the 1997 autobiography on which they are based, Marks' live shows are full of stoned recollections, artfully told.

Using multimedia footage spanning three decades, the new show also includes untold stories such as his dealings with the CIA, the Italian mafia and MI6.

It's being touted as "more dangerous and more revealing than ever before" - but you're as likely to be captured by his Welsh burr and cosy charisma.