Deep Nostalgia refers to the AI-driven photo animation technology released by MyHeritage in early 2021, which uses deep learning to animate faces in still photographs with realistic gestures and expressions. While designed as a sentimental tool for genealogy enthusiasts to see their ancestors move, the internet quickly adopted it for meme culture. It became a viral sensation for creating 'uncanny valley' content, where users animate historical figures, statues, or even paintings to produce surreal and sometimes haunting results. The meme highlights the fine line between heartwarming nostalgia and the unsettling nature of artificial intelligence mimicking human life.