which アニメ has got the best opening?

Hmm...I think my お気に入り アニメ Openings are the Case Closed Openings all three of them which are (Pounding Of My Heart,Mystery and Case Closed Opening 3..) :3 and FMA:Brotherhood's first two Openings (Again and Hologram)

黒執事 1 AND 2!!!!!

Either..
桃, ピーチ Girl [below]

Vampire Knight (link)

School Rumble (link)

Soul Eater (link)

xxxHolic (link)

Ouran High School Host Club (link)

or

Clannad (link


Sorry, I couldn't choose just one. ^^;

OOH thats a hard question....uhm
maybe Clannad (Season 1) I 愛 it. When I saw this question, I actually had something else on mind, but until I remember Im going with this.

Either Ouran High School Host Club または Sailor Moon Sailor Stars.

D.grayman's first opening
Soul Eater openings
FMA brotherhood openings 1 and 4

~Katekyo Hitman Reborn 2nd opening (Boys and Girls) and 4th opening ( Last クロス )
~Kimi ni Todoke season 1 opening ( Kimi ni Todoke )
~One Piece 6th opening ( Brand New World ),8th opening ( Crazy 虹 ), 9th opening ( Jungle P ), 11th opening ( Share The World ), 12th opening (Kaze wo Sagashite), 13th opening ( One 日 )
~Special A 2nd opening ( Gorgeous 4U )
~Bleach 2nd opening (D-tecnolife)
~Toward The Terra 2nd opening (Jet Boy Jet Girl)
~Code Geass season 1 1st opening (Colour)
~Gintama 3rd opening (Gin-iro no Sora)
~Ookiku Furikabutte season 1 2nd opening ( Seishun Line)
~Ookiku Furikabutte season 2 opening ( Natsuzora )
~Fullmetal Alchemist 1st opening (Melissa)
~Fullmetal Alchemist Brotherhood 1st opening (Again)

BLEACH!!!!!!!!!!!!!!

Crash B-Daman opening! XD

1 Cowboy Beboplink
2 Darker Than Black link
3 Trigun link
4 Wolf's Rain link
5 Samurai Champloo link

CLANNAD and CLANNAD After Story Opening
Inazuma eleven opening 2,4,5
Pokemon DP Battle dimensions opening (only song)
Wagamama Fairy Mirumo De Pon all

Martian Sucessor Nadesico!!!!!!!!!!!!!
and the ending theme to Scrapped Princess is good too:Here's the link!!!
link

Sorry i couldnt find the actual ending sequence but it was taken off YouTube for copyright reasons

Fairy Tail - link

K-ON - link

Toradora is the best in my opinion
link

death note :D
and opening 1
but i also 愛 the ending song for opening 2 :D

I like the first opening of Lovely*Complex, and the 秒 opening of 黒執事 the best.

hem i think
Utauyo!! MIRACLE (K-ON!! OP2)
God only knows (Kami Nomi zo Shiru Sekai OP)
Help!! -Hell Side- and Help!! -Heaven Side- (MM! OP)
irony (Ore no Imouto ga Konna ni Kawaii wake Ga nai OP)
Connect (Puella Magi Madoka Magica OP)
Destine Historie (Gosick OP)

1)R.P.G(rockin'playing game) from fairy tail
2)Sign from NARUTO -ナルト- shippuden
3)ft. from fairy tail
4)Kaidoku Funuo from code geass r1
5)raion from blood+
6)D-technolife from bleach
7)Easy go-hitman reborn
8)Snow fairy-fairy tail
9)again-Fullmetal Alchemist brotherhood
10)88-Katekyo hitman reborn
11)forever-elemental gelade
12)aitsu-super gals
13)19 sai-xxxholic
14)nobody knows-xxxholic kei

RAHXEPHON one of the best animes ever made !FACT now あなた know it lol

黒執事 I & 11 :D

Letter bee
mermaid melody
LA-Corda doro primo passo
One piece
Kirarin Revolution
Card Captor Sakura
It's happy days
Kamichama Karin
Fairy tail
Record of Lodoss Tuar
Pandora Hearts
07-GHOST
ROZEN MAIDEN
fly girl
Ghost Hound
Hell Girl
KODATO
Tsubasa:Resarvoir Chronicles
Shike

one of お気に入り is the song, my soul your beat from the アニメ beat angel.