It’s April 20, which may not mean that much to you if you don’t partake. But if you do partake — of the sticky-icky bud, that is — then you know that it’s time for an in-depth exploration of a certain plant. Attitudes about it are changing, and editor Bryan Gottlieb looked into that. We’ve also got the lowdown on how 420 came to be synonymous with toke time. In honor of stoners’ high holy day, 4/20, we offer up a quick sampling of some flicks we think are positively potty.