Joe Swanberg is familiar to many as a genial Mumblecore director who has grown his popularity via SXSW and other film festivals around the country. He writes, directs, shoots, often acts and improvises his way through his low-budget naturalistic movies. While his last film "Drinking Buddies" required more writing and organization, current release "Happy Christmas" marks a return to his old ways, which means you need to like this kind of movie to enjoy it.