1. DRAGON BALL Z
They're fun as hell. The fights, the long exposition, the relentless power creep...it's the epitome of what makes anime ~anime~. You can start with Z and double back to the original if you like it, and there's also Dragon Ball Z Kai, which helpfully cuts out a lot of the filler, moving things along much quicker.
3. COWBOY BEBOP
Cowboy Bebop follows a small team of bounty hunters traveling through space. Despite its simple premise, Cowboy Bebop becomes something extraordinary through finely developed characters, stellar musical influences, and an engaging storyline. It's why even decades later people still hail it as one of the finest anime series of all time.
5. HUNTER X HUNTER
Hunter X Hunter starts off with Gon Freecss' journey to become a Hunter, a person who isn't bound by normal societal rules and may take on life-threatening tasks. He quickly realizes there's more to being a Hunter, and more to the world around him, than he ever imagined. This anime stands as one of the smartest shows in its genre, so don't be deterred by its length.
7. DEATH NOTE
A teenage boy named Light Yagami finds a notebook that kills anyone whose name is written inside, and decides to use that power to eliminate crime from the world. This dark story forces viewers to confront hard questions about morality, while still providing a thrilling battle of wits that lasts up until the series's finale.
9. STEINS GATE
Time travel occurs every so often in anime, and the highly rated Steins;Gate attacks it head-on with a compelling story about three friends who accidentally invent a machine that sends emails back in time.
11. ATTACK ON TITAN
Oh, was the dark, dreary futility of Evangelion not enough for you? Then how about Attack on Titan, one of the only shows that rivals it in post-apocalyptic bleakness? It's become a phenomenon in the few years it's existed. The action's good, too.
Naruto is a long-running shonen anime, which means it's been a huge influence on anime as a whole. Initially focusing on the title character's goal to become the hokage, it quickly branches off to focus on political intrigue, warfare, and some of the most desperately sad villains in all of anime. You can skip some of the filler, but Naruto should be on every anime fan's to-watch list.
15. ONE PIECE
The series begins with the execution of Gol D. Roger, a man known as the King of the Pirates . Just before his death, Roger announces that his treasure, the One Piece , will be available to anyone who finds it, beginning the Great Pirate Era. As a result, countless pirates set out to the Grand Line to look for the treasure.Twenty-two years have passed since Roger's execution, and Monkey D. Luffy, a young man inspired by his childhood idol and powerful pirate "Red Haired" Shanks, sets off on a journey from the East Blue sea to find the One Piece and proclaim himself as the King of the Pirates.
17. FULLMETAL ALCHEMIST: BROTHERHOOD
If you're an anime fan, chances are high that you've already seen Fullmetal Alchemist: Brotherhood, but if you haven't, this anime about the power of alchemy is well worth your time. Whether you're into political intrigue, family drama, or just want a good laugh, FMA has it all.
19. TOKYO GHOUL
Tokyo is infested by creatures, who look, talk, live like humans but are unable to eat anything except human meat,(can be compared to vampires at some level). So the protagonist Ken Kaneki, a human, goes on a date with his crush, Rize Kamashiro(Ghoul). Rize tries to devour Kaneki but is intervened by an accident on a construction site. A doctor in the hospital takes Rize's organs and puts them in Kaneki's body, thus Kaneki turning into a Ghoul. It is one of the best series which questions morality and gains our sympathy for both humans and Ghouls