The best way to celebrate Batman Day is on 4K Blu-ray — here are my four favorite Caped Crusader discs, including one that's my go-to for testing TVs

<p>James is the TV Hardware Staff Writer at TechRadar. After studying English Literature and Creative Writing at Bath Spa University, he rekindled a childhood love for writing and creating stories that soon translated into the world of freelance writing, primarily for music blogs. Eventually getting into the world of TV and hi-fi, James honed a knowledge and passion for all things audio and visual.