Catchiest theme song

[IshokuOsero]

Popotan (both the opening and the ending)
Moon Phase - first intro
Lovedol ending
Shugo Chara first ending
Chocotto sister first intro
Yes! Pretty Cure 5! first intro >.>
Welcome to the NHK outro xD
Lucky Star intro
Haruhi Suzumiya outro


I suppose that's all I can think of for now~

[lolitaninja]

'Hero's Comeback" (Naruto Shippuden)

[caskaslyrk]

Sara..from 2nd Season City Hunter...oooh sara...LOL

Also opening song for Senjou No Valkyria...very catchy!

[JohnnyAR]

Fly Me To The Moon, that song has been stuck in my head ever since I first watched Evangelion. I almost have lyrics memorized :P

[david]

I like the first intro for Case Closed.

"It was the first new centuryyyyy, in one hundred years..." lol

[GS Dragono]

I think I'm voting Fate/Stay Night second OP (Kirameku Namida wa Hoshi ni).

[questionette]

The ORIGINAL Dragon Ball series.  I watched it when I was wayyy little and I STILL remember all the words. :P

[amaya_JDB]

Lucky Star OP & School Rumble 1st season OP

hahaha
GURUGURU mawaru GURUGURU mawaru
GURUGURU mawaru GURUGURU mawaru
><

[DentyneIce408]

School Rumble 2nd season - Sentimental Generation
Samurai 7 - Unlimited
Outlaw Star - Through the Night
Hunter X Hunter - Ohayou
Gungrave - Akaneiro ga Moeru Toki
Eyeshield 21 - Breakthrough
Desert Punk - Sand Mission
Death Note - What's Up, People!? & Zetsubou Billy
Code Geass - Colors
Air Gear - Chain

When I get alot of time on my hands I'll go read every post and list to see what songs were most posted. Then we'll know what's the catchiest song.

[G.I.R]

My two cents:

H.T. from Trigun
Tank From Cowboy BeBop

[RaddaX2]

Amai amai amai amai, ko-i-bi-to! (DMC)

Kimi wa TOUGH BOY, TOUGH BOY, TOUGH BOY! (HnK2)

Cha-La, Head-Cha-La!(DB)

<3

[Mint]

I have to say.. Lucky Star OP and Code Geass. :x

[Dragon Ninja]

The opening song for Gundam 00 Season 2. I've never actually watched the show, I just stumbled across the song, but I love it. I'm listening to it right now.

[blackyggdrasil]

Shakugan no Shana - Crimson Sky (first op)
Full metal alchemist Brother hood- Again ( 1st op)
Murder princess's op i don't remenber the song
( too lazy to post more i got too many )

[Ciel]

Bakemonogatari OP 4 - Renai Circulation
Haven't been able to get that out of my head since I've heard it.

http://www.youtube.com/watch?v=L9rhul08Zp8

[God91125]

http://www.youtube.com/watch?v=VmSjrr0XQNw

*sniff* Dango Daikazoku

[ELDEMONIO]

For me its.

Death Note:
Zetsubou Billy
What's Up People!?

Cyborg 009:
What's the Justice
Genesis Of Next

Lucky Star:
Motteke!Sailor Fuku!

Bleach:
Alones

[michiko nakano]

I'd have to say Vampire Knight Guilty (opening) and Vampire Knight (closing)

Also, it's not the theme, but "waltz with adonis" and "tango brilliante" from Ouran High School Host Club!!

[prototypem]

The Durarara opening song is currently stuck in my head.

[maitosis]

Don't Say Lazy - K-On!
Only My Railgun - To Aru Kagaku no Railgun