Mark and Jay Duplass‘s Togetherness, an eight-episode HBO miniseries debuting on Sunday, 1.11, is about “four middle-aged people reconciling their dreams with their current personal and professional lives in Los Angeles.” For whatever reason, 30something parents Brett (Mark Duplass) and Michelle (Melanie Lynskey, a constant portrayer of morose or dispirited types) invite Alex (Steve Zissis), a fat, out-of-work actor, and Michelle’s free-spirited sister Tina (Amanda Peet) to move in with them. And then the fun starts. Duplassy, desultory. I’m sure the eight hours are more intriguing and layered than what this teaser is indicating.