Quoted By:
Neon Genesis Evangelion - classic. just watch the end of evangelion afterwards and maybe the rebuild movies.
Great Teacher Onizuka - extremely funny, the characters are believable and you'll end up caring about them.
Samurai Champloo - amazing art-style and it was directed by the same guy who work on cowboy bebop.
Planetes - very interesting setup (year 2075 main characters dispose space debris) however i didn't enjoy the final episodes as much as the first ones.
Working!! - simple but comfy af. (hilarious characters in a restaurant sit-com).
K-On - pretty girls -pic related.
Welcome to the NHK - NEET in his early 20's crisis.
Rurouni Kenshin: Trust & Betrayal - if you like champloo this one is definitely a must watch.
Shigurui - maybe a little too 'gore-ish' but it's definitely in my top 5.
Oregairu - just watch the first episode and decide.