what アニメ should i watch

Sure can!!
Here are some アニメ I have watched:
SLICE OF LIFE ANIME:
-K-ON! (A personal favorite!)
-Lucky Star
-Hetalia (It's hard to explain, but it's personified countries. Look it up if you'd like!)
-Azumanga Daioh (A personal お気に入り of mine)
-Hidamari Sketch

ACTION ANIME:
-Soul Eater
-Mirai Nikki (It's very violent and can be kind of really creepy... but 全体, 全体的です the story is really awesome. Not for people who get grossed out easily.)
-Black Rock Shooter
-DuRaRaRa!

Here are some of my お気に入り animes

One piece
Soul eater
Fairy tail
エンジェル beats
Elfen lied
Claymore
Baka and test
Ouran highschool host club
Inuyasha
Shaman king
Noein
Gurren lagann
Ef a tale of memories
Bleach
To aru magestu no index
Detective Conan
Death note
Deadman wonderland
Yu yu hakisho

Hope that helps :)

Watch Full Metal Alchemist it's amazing

Try watching Bey Blade,don't know if this helps...

heres some:
Black Butler
Baka and Test
Durarara!!
Baccano
Ouran Highschool Host Club
FMA & FMAB
Code Geass
D. Gray-man
エンジェル beats!
Fruits Basket
Death Note

Hmmm...........
I just can say Magical Girl Lyrical Nanoha and NARUTO -ナルト- Shippuden

Most are posted, but some are here-
The Melancholy of Haruhi Suzumiya,
爆転シュート ベイブレード (original),
Dragon ball,
Dragon ball Z,
Kaichou wa Maid sama! (English dub is on youtube),
Shakugan no Shana,
Kekkaishi ( I don't know about English dub, sorry),
Detective Conan,
Winter Sonata (romantic),
Fairy tail,
Bleach,
Naruto.
Hope あなた find this helpful!
I have embedded a video, hope あなた like it!

Welcome to the NHK. :-D

あなた can find it in both sub and dub. Just look around.

Nevermind. I'll post the link here for you. :)

link

Here's some that i know and i became interested:
-Law of Ueki
-Mythical Detective Loki
-Hunter X Hunter 2011
-Kuroko no Basket
-Bleach
-D.Gray-Man
-Fairy Tail
-Prince of tennis
-Marchen Awakens Romance
-One Piece
-Fullmetal Alchemist Brotherhood
-Detective Conan
-Eyeshield 21
-Fushigi Yuugi
-Yakitate!! Japan
-Mobile Suit Gundam 00