Lester Grinspoon

"Comedy duo Cheech & Chong have long been associated with pot," starts a recent USA Today post about actor and comedian Tommy Chong, now 74. "Associated with" is kind of an understatement"”the pair pretty much invented the stoner comedy. Chong has recently been back in the news talking about marijuana, albeit in quite a different context: Diagnosed with prostate cancer, he said he's been turning to cannabis to treat disease symptoms such as wooziness.