Had posted this on what you're currently watching thread, but realized its fit for recommend as well
I've been checking out alot of series lately and so far can say besides some of the older ones. which to list would be about 250 total seen series or more. For new this past year / on going.
Bleach - Shinigami fight the souls that have turned to send them back where they belong and guide the dead that linger back to the spirits world. Humans can sometimes get dragged into conflict if they have the power to see.
Naruto - Ninja's fight for their village, but also for those that hire them, and for their friends.
One Piece - Fight to become the pirate king in the grand age of pirates.
Tsubasa Chronicle - Life comes to an end as all memories are taken from you and scattered across all the dimensions. Boy must fight to find them all to save the life of the girl he loves.
History's Strongest Disciple Kenichi - Panzy kid decides to become strong to protect the weak, but who will protect him.
Devil May Cry - Super power man for hire, name your price, he's always broke.
Claymore - Half man half demons fight to protect humans. All of them are women that are half and half.
Darker Than Black - Super powers and different uses for them.
Reideen - Robots and Aliens. Fun to be had.
Hayate No Gotoku - Bad luck never looked so good when boy finds himself stuck in a situation he can only get out of by working for a rich heiress.
Kaze No Stigma - People with powers of earth, fire, water, wind fight spirits only they can and others.
Zero No Tsukaima - Another world filled with magic. Guy pulled in from normal everyday life into a strange new life.
Konjiki No Gash - Demons from another world fight to become king. Follow the story of Gash Bell.
Tokimeki - Romantic Comedy - High school
The Skull Man - Locked down society and mysterious people.
Tokyo Majin Gakuen Kenpuchou - Super powers and fighting. high school never seemed so strenuous.
Sola - Guy likes to take pictures of the sky, meets a girl, their story goes from there. Or does it.
Shounen Onmyouji - Buddhist monk fights evil spirits normal people can't see while still studying to become higher up in feudal era.
Shining Tears X Wind - Adventure in another world for a group of high school kids.
Seto No Hanayome - Craziness with mermaids and humans. High school all over again with a twisted lifestyle change.
Shinkyoku Soukai Polyphonica - Fairies and the like are all around, music gives them power. To help or to destroy.
Death Note - Shinigami + book that kills, what evil awaits.
Nodame Cantabile - Great musician, finding his place with strangest girl you could ever meet who also plays the piano.
Overdrive - High school, loner becomes worlds best at cycling. Tour de France here he comes.
Moonlight Mile - Adventure - Romance - Space and the near future.
Nagasarete Airantou - Romantic Comedy - Unknown island. Only Male there, tons of women, the fun to be had. Especially when you're a high school aged male!
Lovely Complex - Romantic Comedy - School life.
Koutetsu Sangokushi - Chinese history twisted into action packed anime.
Kekkaishi - Sacred land to protect and the ones that protect it are in middle school / high school.
Kiss Dum - Bugs destroying the world and the people that fight them.
Kaibutsu Oujo - Supernatural stuff and kid getting knocked around alot.
Juusoukikou Dancouga Nova - Fighting in giant robots, not much more to say than that.
Chocotto Sister - Kid asks for sister from santa. One day the wish comes true.
Blue Dragon - Summoned Beasts and people with ability to call them forth.
Ah!! My Goddess - Angels and unluckiest guy ever + college life
for currently unfinished or just recently finished series. All worth watching, ones that weren't neglected to add, but yeah quite a few things out there to watch that are worth putting time into. If you want to spare alot of time. Also all of those little things added to them to help describe typed up myself, so if you feel they're a little off feel free to put your spin on em, just figured help a little for people that dont want to have to sort through and read about all of them before they'd try checking them out.