In Chris Hemsworth: A Road Trip to Remember , the man best known as Marvel’s hammer-wielding Thor trades CGI battles for something far more human: a motorcycle ride across Australia with his dad, Craig, who is living with a form of Dementia (in his case, caused by Alzheimer’s disease). It’s a one-hour National Geographic® special, produced with Darren Aronofsky’s Protozoa and Streaming on Disney+® and Hulu®. Still, it feels more like a lovingly shot home movie than a blockbuster event. Set…