Do あなた guys know any good アニメ 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 アニメ intro song I've heard yet. :)

Shaman King opening

Cowboy Bebop ending theme

My お気に入り are:

Diabolik 恋愛中 OP 1
Elfen Lied OP
Shiki OP 1
Shiki OP 2
Naruto: Shippuden ED 32
ノラガミ 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
NARUTO -ナルト- OP 1
NARUTO -ナルト- OP 2
NARUTO -ナルト- 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, 線, レイ 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)
ノラガミ & ノラガミ Aragoto: Hello Sleepwalkers, こんにちは 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 ハート, 心 によって BoA- 犬夜叉 ending theme from Season 4

Weeeeeell since あなた asked...

エンジェル によって angela [Coppelion OP 1]
Hacking to the Gate によって Itou Kanoko [Steins;Gate OP 1]
Complication ~ ROOKiEZ is Punk'd [DuRaRaRa!! Op. 2]
LAMENT: Yagate Yorokobi wo ~Aira Yuhki [The Legend of Legendary ヒーローズ Op. 2]
KINGS ~ angela [K Project Op. 1]
Crowds ~ White Ash [Gatchaman Crowds Op. 1]
Colors（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 ヒーローズ Ending 2)
Namae no Nai Kaibutsu ~ Egoist (Psycho Pass Ending 1)
Tooku Made ~ angela (Coppelion Ending 1)
Shunkan Sentimental ~ SCANDAL (FullMetal Alchemist: Brotherhood Ending 4)
Last Theater ~ NoisyCell (Death Parade Ending 1)
I Miss あなた ~ 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 あなた HAVE BEEN WARNED.)

Hello shooting 星, つ星 from assassination classroom
link

Colours によって Flow
World's End によって Flow
These theme songs are both from Code Geass.