Ending a TV show is a high-wire act. Do too much and it feels forced. Do too little and fans riot in the streets—metaphorically, of course. But every once in a while, a series sticks the landing so cleanly that even critics have to slow-clap. According to critics, these are the most technically perfect TV series finales of the century. The kind that tied up arcs, honored themes, and closed the curtain with precision instead of panic. No messy loose ends. No emotional cheap shots. Just beautifully engineered goodbyes.