Do 你 guys know any good 日本动漫 openings/endings that i can listen to?

The best opening.

Uh...Resonance, Soul Eater's first opening...

Chivalry of a Failed Knight

The Sore Feet Song from Mushishi is the best 日本动漫 intro song I've heard yet. :)

Shaman King opening

Cowboy Bebop ending theme

My 收藏夹 are:

Diabolik 爱人 OP 1
Elfen Lied OP
Shiki OP 1
Shiki OP 2
Naruto: Shippuden ED 32
《野良神》 Season 1 OP
Naruto: Shippuden ED 35
Corpse Party: Tortured Souls OP
Yami Shibai Season 1 ED
Another OP
Shingeki no Kyojin OP 1
Amnesia OP
Mirai Nikki OP 1
Soul Eater OP 1
Naruto: Shippuden OP 3
Naruto: Shippuden OP 16
Naruto: Shippuden ED 23
Naruto: Shippuden OP 9
DuRaRaRa!! OP 1
Naruto: Shippuden OP 15
Naruto: Shippuden OP 4
DuRaRaRa!! x2 Shou ED
DuRaRaRa!! x2 Ten ED
Haikyuu!! Season 1 OP
火影忍者 OP 1
火影忍者 OP 2
火影忍者 OP 4

Right now I'm into Korokoro Cocotama! From Kamisama Minarai Himitsu no Cocotama!

Natsume yuujinchou: Issei no sei, Ano hi time machine, Boku ni dekiru koto, Ima kono toki (ALL OPENINGS)
Fullmetal alchemist brotherhood: Again, Hologram, Golden Time Lover, Period, Rain (ALL OPENINGS) Uso, Let it Out, Tsunaida Te, Shunkan Sentimental, 射线, 雷 of Light (ALL ENDINGS)
Shigatsu wa Kimi no Uso: Hikaru Nara, Nanayro Symphony (ALL OPENINGS)
Naruto: (I only recommend a few) OPENINGS: Yura Yura, Re:member, Haruka Kanata, Youth Rapsody ENDINGS: Wind, Parade
Soul eater: Resonance, Papermoon (ALL OPENINGS)
《野良神》 & 《野良神》 Aragoto: Hello Sleepwalkers, 嘿 Kids (ALL OPENINGS)
Haikyuu & Haikyuu 秒 Season: Imagination, Ah Yeah, I'm a Believer (ALL OPENINGS) (excluding the last one that is unknown at the moment)
Owari no Seraph: X.U. (second season op i have not heard)
Shingeki no Kyojin: Guren no Yumiya, Jiyuu no Tsubasa (ALL OPENINGS)
Kaichou wa Maid-Sama: ENDING: Loop
Tokyo Ghoul: OPENING: Unravel
A Certain Scientific Railgun: OPENING: Only My Railgun
Ouran High School Host Club: ENDING: Shissou
Sword Art Online: OPENING: Crossing Field

Every 心 由 BoA- 犬夜叉 ending theme from Season 4

Weeeeeell since 你 asked...

天使 由 angela [Coppelion OP 1]
Hacking to the Gate 由 Itou Kanoko [Steins;Gate OP 1]
Complication ~ ROOKiEZ is Punk'd [DuRaRaRa!! Op. 2]
LAMENT: Yagate Yorokobi wo ~Aira Yuhki [The Legend of Legendary 超能英雄 Op. 2]
KINGS ~ angela [K Project Op. 1]
Crowds ~ White Ash [Gatchaman Crowds Op. 1]
颜色 ~ FLOW [CODE GEASS: Lelouch of the Rebellion Op. 1]
Period ~ Chemistry [FullMetal Alchemist: Brotherhood Op. 4]
Higurashi no Naku Koro ni ~ Eiko Shimamiya [Higurashi: When They Cry Op. 1]
The World ~ Nightmare [Death Note Op. 1]

Trust Me ~ Yuya Matsushita (Durarara!! Ending 1)
Pride of Tomorrow ~ JUNE (D. Gray Man Ending 2)
Hikari no Firmento ~ Takagaki Ayahi (The Legend of Legendary 超能英雄 Ending 2)
Namae no Nai Kaibutsu ~ Egoist (Psycho Pass Ending 1)
Tooku Made ~ angela (Coppelion Ending 1)
Shunkan Sentimental ~ 《丑闻》 (FullMetal Alchemist: Brotherhood Ending 4)
Last Theater ~ NoisyCell (Death Parade Ending 1)
I Miss 你 ~ No. 3 Meters (Binan Koukou Chikyuu Bouei-bu LOVE! Ending 1)
Strength ~ abington boys school (Soul Eater Ending 4)
Dou ni mo Tomara nai (Maria Holic Alive Ending 1) (This one is on the cutesy side AND WILL NOT LEAVE YOUR HEAD 你 HAVE BEEN WARNED.)

Hello shooting 星, 星级 from assassination classroom
link

Colours 由 Flow
World's End 由 Flow
These theme songs are both from Code Geass.