there have been so many top 3's on this board, so i guess why not? i guess i'll start

1) Ayako Kawasumi
(Mahoromatic: Mahoro, Ai Yori Aoishi: Aoi, Onegai Teacher: Herikawa)
2) Tanaka Rei
(Chobits: Chii, Gundam Seed: Lacus)
3) Orikasa Fumiko
(SaiKano: Chise, Scrapped Princess: Pacifica)

my three

1) Inoue Kikuko
Happy Lesson ,Advance, OVA:Sanzein Yayoi| Ikkitousen:Go-Ei |Kiddy Grade :Alv |Mouse:Momozuno Mei |Onegai Teacher, Twins:Kusanagi Mizuho |Yumeria :Senjou Nanase

2)Yukino Satsuki
Ai Yori Aoshi , ~Enishi~:Tina Foster | Full Metal Panic , Fumoffu:Kaname Chidori | Love Hina , Again:Otohime Mutsumi |Inu Yasha :Higurashi Kagome
|R.O.D the TV :Sumiregawa Nenene

3)Suzumura Kenichi
Onegai Twins: Shimazaki Kousei |X TV:Kamui Shiro |Shingetsutan Tsukihime:Shiki | Gravion , Zwei:eiji |UFO Princess Warukyure, s2: Tokino Kazuo

Nice topic ^^
1-Mitsuishi Kotono(Excel Saga-Excel,Noir-Mireille,Gunslinger Girl-Henrietta,Evangelion-Katsuragi Misato)

2-Momoi Haruko(Popotan-Mii,Nurse Witch Komugi-chan Magikarte-Komugi,Bottle Fairy-Tama-chan)

3-Megumi Hayashibara(Saber Marionette-Lime,Nuku Nuku,Evangelion-Ayanami Rei,Slayers-Lina Inverse)

I just know 4 because Im not interested in seiyuus unless I really like the voices.

1. Ayako Kawasumi
(Mahoro, Aoi, Ellie from Rave, soon "Hikari")

2. Mitsuishi Kotono
(Marrue Ramius from Gundam Seed, Misato from EVA)

3. -whats her name again-
Love Hina - Naru, some role in Da Capo

Megumi Hayashibara is pretty nice as well, but she doesn't do much voice acting now that she's pregnant.

Must be Yui Horie ^^

nagata ryoko - eclair (kiddy grade)

Haruko Momoi - komugi chan

errrrrr.....
u mean in anime? lol cu zi dont know.
i guess i'll go with madison from Cardcaptors since i onli heard that character sing. heh

Orikasa Fumiko - One of the best Seiyuu/singers to come out recently with one of the most prettiest voices I've heard in anime ^^;

She played Chise (Saikano), Sherry (Konjiki no Gash), Ciel (Tsukihime) and even sang the awesome ED Rinne no Hate ni for Tsukihime ^^b

Others great seiyuus on my list are Hayashibara Megumi, Tanaka Rie and Yukino Satsuki.

the one that is doing motoko in SAC

1. Omi Minami (Ruri Hoshino, Kakurine, Dvergr,Meredy... )
2. Hirano Aya (Lumiere)
3. Hayashibara Megumi (Rei Ayanami, Lina Inverse, Lime...)
^^;;

1. Kawasumi Ayako (mahoro, Konomini, etc)
2. Megumi Hayashibara (Love Hina, etc.)
3. Momoi Haruko (PoPoTan, Komugi)

My vote:

1. Akira Ishida (Xelloss: slayers/Hakkai: Saiyuki [yummy!])

2. Megumi Hiyashibara (Lina: Slayers/ Momiji: Blue Seed, and on and on and on...)

3. Yui Horie (Tohru: fruits basket/ Yuya: Samurai deeper Kyo)

Japanese:
1. Seki Tomokazu (Touji, Evangelion|Touya, Card Captor Sakura| Kyo, Fruits Basket| Shuichi, Gravitation|Chichiri, Fushigi Yuugi|Ashton, Star Ocean EX|Sousuke, Full Metal Panic| ect.)
2. Aya Hisakawa (Ami, BSSM|Miki, Utena|Yuki, Furuba|Kero, CCS| ect.)
3. Ai Orikasa (Quatre, Gundam Wing| Tohma, Gravitation|ect.)

English:
1. Crispin Freeman (Zelgadis, Slayers|Amon, Witch Hunter Robin|Alucard, Hellsing|Shougo Amakusa, Rurouni Kenshin|Hideki, Chobits|Touya, Utena|Hibiki, i,my,me Straberry Eggs|Tylor, Irresponsible Captain Tylor|Tsume, Wolf's Rain|Albedo/Nigredo, Xenosaga|Albel, Star Ocean 3| ect.)
2. Mona Marshall (Izzy[Koushiro], Digimon|Motoko, Love Hina|Toboe, Wolf's Rain|Spike, Kurogane Communication|ect.)
3. Eric Stuart (Gourry, Slayers|James/Brock, Pokemon|Watari, Yami no Matsuei|ect.)

top 3 to me:
1. Richard Cox (inuyasha english translation)
2.Momoi Haruko (komugi)
3.Tanaka Rei (chii-chobits)

1.Megumi Hayashibara[Anna, Lina, Ai.....]
2.Yui Horie[Tohru, Naru, Eri, Jeanne....]
3.Orikaza Fumiko[Ruki...]