Hoo boy, is it ever January with movies like “The Last Man” coming out. Hayden Christensen broods beneath a bushy lumberjack beard as a combat veteran building a bunker to survive a prophesied apocalypse. But all is chaos, smothered in relentlessly bleak shades of gray, so it feels like the apocalypse is already happening. Very confusing — and dull. My zero-star review, at RogerEbert.com.