I just caught Ron Mann's Grass, his manifesto for legalising pot. Okay, so I'm a little late to the party. It originally came out in 1999. Drug laws in North America might have eased a little since then, and the hysteria surrounding “reefer madness” that informed early US drug policy looks even more hilarious through the telescope of time a decade on. But this cheeky, pop history of pot is still relevant, and entertaining as it cruises through significant cultural and political landmarks in stoner history from Cheech and Chong to George Bush Snr.