I absolutely love Serial Experiments Lain! The way the series plays with reality and identity is mind-blowing. The tricks they use to blur the lines between the virtual world and the real world are so clever. It really makes you question what is real and what is just a construct of our minds. The way they incorporate technology and existential themes is so ahead of its time. It’s a series that stays with you long after you finish watching it. Truly a masterpiece in the world of anime.