It’s been a big week in nerd news. “Watchmen” prequels are officially on the way in the form of “Before Watchmen,” seven interconnected comic book miniseries that chronicle Rorschach and pals before their fateful encounter in the Alan Moore and Dave Gibbons graphic novel. Speaking of chronicles, Josh Trank’s found-footage superhero flick “Chronicle” is out in theaters this week, and it’s awesome. But it’s got stiff competition in the form of Dan Radcliffe’s big-screen comeback and a whale of a drama. Get more on that, plus some talk about Spidey’s canceled “Avengers” cameo, in this week’s Talk Nerdy!