Top 3 Albums:

Ayumi Hamasaki- Love songs
Buono!- We are Buono!
Kalafina- Red Moon

Top 5 Singles:

Perfume- VOICE
AKB48- Heavy Rotation
S/mileage- Ganbaranakutemo ee Nende!
Berryz Kobo- Otakebi Boy WAO!/Tomodachi da Tomodachi nande
Ayumi Hamasaki- MOON/blossom

Top 10 PV's:

AKB48- Beginner (original version)
Perfume- Nee
Girls' Generation- Oh! + Run Devil Run (story version)
Ayumi Hamasaki- Don't Look Back
AKB48 (Team A)- Kurumi to Dialogue
Perfume- Natural ni Koishite
AKB48- Heavy Rotation
AKB48 (Team K)- ALIVE
Perfume- VOICE

Top 5 Cover's:

Ayumi Hamasaki- Love songs (USB/microSD/DVD ver.)
S/mileage- Ganbaranakutemo ee Nende! Ltd. Version C
Perfume- Fushizen na Girl/Natural ni Koi shite CD Only and CD+DVD
S/mileage- Otona ni Narutte Muzukashii!!! CD Only
Aya Hirano- Hysteric Barbie CD+DVD

Top 20 Songs:

AKB48- Beginner
Perfume- 575
Buono- Ura Hara
Kalafina- Hikari no Senritsu
Ayumi Hamasaki- do it again
Berryz Kobo- Otakebi Boy WAO!
Kalafina- Yami no Uta
Kalafina- Red Moon
Ayumi Hamasaki- Like a doll
Ayumi Hamasaki- blossom
S/mileage- Smile Bijin
Girls Generation- Oh!
Kaela Kimura- A winter fairy is melting a snowman
AKB48 (Undergirls)- Namida no Seesaw Game
Buono- We Are Buono!
Perfume- Nee
Perfume- Natural ni Koishite
BoA- Hurricane Venus
Miku Hatsune- Lost story
AKB48 (Team K- Tomomi Itano, Moeno Mito, Erena Ono)- Seifuku Resistence

2010 was such a great year, I don't know where to begin O.O

10 best albums in no particular order
- Rock 'n Roll Circus - Ayumi Hamasaki
- UNIVERSE - Koda Kumi
- Hadou - Koshi Inaba
- Hurricane Venus - BoA
- Cosmonaut - Bump of Chicken
- SPORTS - Tokio Jihen
- Single Collection vol. II - Utada Hikaru
- SENSE - Mr. Children
- STAR - Mika Nakashima
- Trigger - Porno Graffitti

10 best songs in no particular order
- Free Planet - Superfly
- Hurricane Venus - BoA
- Microphone - Ayumi Hamasaki
- Lollipop - Koda Kumi
- Break It - Namie Amuro
- I Wish for You - EXILE
- FLASH - Crystal Kay
- Crystal Girl - ICONIQ
- You Bet! - Kaela Kimura
- Lonely Star - Mika Nakashima

3 favourite "new" (as in new to me) artists
- Mr. Children (I know, I'm late to the party XD)
- JASMINE
- Nishino Kana

Top 3 albums
Hadou- Koshi Inaba
ETERNITY ~Love & Songs~- Koda Kumi
Love songs- Ayumi Hamasaki

Top 5 singles (in no particular order)
MOON/blossom- Ayumi Hamasaki
Mister- KARA
GENIE- Shoujo Jidai
Okay- Koshi Inaba
Gossip Candy- Koda Kumi

Top 3 PVs
Lollipop- Koda Kumi
Okay- Koshi Inaba
Don't look back- Ayumi Hamasaki

(That's all I can think of! lol)

BEST SINGLE
miwa - don't cry anymore
immi- Sign of Love
Perfume - Nee
Perfume - Fushizen na Girl / Natural ni Koishite
Do As Infinity - Kimi ga Inai Mirai ~Do As x InuYasha SPECIAL SINGLE~
HIGH and MIGHTY COLOR - Re：ache
Kylee - Kimi ga Iru Kara
ONE OK ROCK - Kanzen Kankaku Dreamer

BEST ALBUM
Base Ball Bear - CYPRESS GIRLS
Base Ball Bear - DETECTIVE BOYS
JASMINE - GOLD
Abe Mao - Pop
immi - Spiral
LANDS - Olympos
ONE OK ROCK - Niche Syndrome
Sowelu - Love & I. ~Ren'ai Henreki~

BEST MINI-ALBUM
moumoon - Refrain (リフレイン)
4minute - Hit Your Heart
Son Dam Bi - the queen

BEST COMPILATION
Utada Hikaru - Utada Hikaru SINGLE COLLECTION VOL. 2
OLIVIA - GREATEST HITS
Kaela Kimura - 5years
RIP SLYME - Good Times

BEST DVD
Namie Amuro - PAST > FUTURE Tour 2010
Ayumi Hamasaki - ARENA TOUR 2009~NEXT LEVEL
Miliyah Kato - MILIYAH THE CLIPS 2004-2010
Do As Infinity - Do As Infinity "ETERNAL FLAME" ~10th Anniversary~ in Nippon Budokan

BEST PV
Ayumi Hamasaki - Virgin Road
Ayumi Hamasaki - Last angel
Perfume - Fushizen na Girl
Perfume - Natural ni Koishite
Perfume - Nee
Sowelu - NEVER / Koboresou na Kuchibiru / Koko mo Soko mo...
Miliyah Kato - Last Love
Taeyang - I Need A Girl feat. G-Dragon
2NE1 - Can't Nobody

BEST SOLO
Namie Amuro
Miliyah Kato
immi
JASMINE

BEST GROUP
Base Ball Bear
VAMPS
Perfume
moumoon

BEST NEW ARTISTS
miwa
WEAVER
Maika
IMALU

BEST COLLABORATION
Base Ball Bear - Kuchibiru Detective (+ acco + Ryofu)
Base Ball Bear - (+ ICHIRO YAMAGUCHI from SAKANACTION)
SoulJa - Hanasanaide yo feat. Thelma Aoyama
MiChi x the telephones - WoNdeR WomaN
ZEEBRA - Butterfly City feat. RYO the SKYWALKER, Mummy-D & DOUBLE
BENNIE BECCA - Ashita with Blaise Plant (MONKEY MAJIK)
AI - FAKE feat. Namie Amuro

TOP SONGS
Utada Hikaru - Show Me Love (Not A Dream)
Sowelu - NEVER feat. VERBAL (m-flo)
SoulJa - Hanasanaide yo feat. Thelma Aoyama
JASMINE - L.I.P.S.
JASMINE - Bad Girl
moumoon - Sunshine Girl
moumoon - Swallowtail Butterfly ~Ai no Uta~
immi - Go Around
Ai Otsuka - I ♥ ×××
BoA - Hurricane Venus
Namie Amuro - Break It
Crystal Kay - FLASH
ICONIQ - Change Myself
Girls' Generation- Oh!
Sakanaction - Identity
Sakanaction - A Look Around
VAMPS - REVOLUTION
Miliyah Kato - Last Love
Tokyo Jihen - Denpa Tsuushin
After School - Bang!
Yamashita Tomohisa - One in a Million
flumpool - Birds
IMALU - Sonna Namae Hoshikunai yo
WEAVER - Hard to say I love you ~Iidasenakute~
Lee Hyori - Chitty Chitty Bang Bang feat. Ceejay of Freshboyz
Son Dam Bi - queen
Taeyang - I Need A Girl feat. G-Dragon

BEST COVER
http://img203.imageshack.us/img203/8459/42675515.jpg

*to complete later

BEST DISAPPOINTMENT
Miho Fukuhara
mihimaru GT
Thelma Aoyama
Mai Fukui
Mika Nakashima
Spontania