An uneven post-apocalyptic thriller

We’ve had so much post-apocalyptic “entertainment" that it now qualifies as a pop-cultural obsession, if not an addiction. Still, dystopian overload didn’t stop director Ridley Scott from taking us to a time when life as we know it once again has come to an end. That said, The Dog Stars, which is based on a 2012 novel by Peter Heller and leans heavily on stars Jacob Elordi, Josh Brolin, Margaret Qualley, and Guy Pearce, includes what might be the year’s wackiest sequence. I won’t make you wait for it. The sequence to which I’m referring features a commanding Allison Janey as leader of a post-apocalyptic cult headquartered in an airport in Grand Junction, Co. Janey's Darlene dresses like an airline stewardess (don’t call her a flight attendant) and flashes a smile that could chill a martini. She and her cohorts have created a throwback world that evokes the '50s and '60s and stands in absurd contrast to the movie's rugged frontier terrain. Perhaps as a bow to movie lore, Scott also…