This week on Pop Culture Happy Hour, with fearless leader Linda Holmes pounding the pavement at the annual Silverdocs documentary extravaganza, the rest of the PCHH gang (Trey Graham, Stephen Thompson and Barrie Hardymon) chat about some of their own favorite nonfiction feature films — true tales of obsessions, outrages and tragedies, as well as a few fun docs as well. Then a look at videogames past and present. All that plus What’s Making Us Happy this week.