I've seen alot but I only remember my favorites (I own or want to own as well)

Bobobo-bo bo-bobo
Jungle wa itsumo hale nochi guu ("Hare`+ Guu" in english dub)
Lucky Star
and newly added to my bunch
The Melancholy of Haruhi Suzumiya

I've seen the other guys (Naruto, Bleach ect.) but they just arn't the same as the ones I listed above. But I do really like Bleach but not enought to spend money on it.

I also keep My favorite Voice actors in check with what I watch and own. Kirk thornton is in Jungle wa itsumo hale nochi guu and Bobobo. some of my other favorites are Vic (I forget how to spell his last name but he play's Ed In Full Metal Alchemist, think thats how you spell it.) Sam Rigel, Steve Blume, and Wendee Lee are all in Haruhi Suzumiya and Sam and Wendee are in Lucky star. And sorry If I spelt these guys names wrong, I didn't want to open another window and go to the wiki to look these names up. 'Kirk Thornton' is a"pen name" I forget his real name.

Black Cat
Honey and Clover
Mushi shi
Shana
Cowboy Bebop
Chromartie Highschool
Genshiken
Deathnote
Code Geass
Ouran Highschool
Doujin Work
Samurai Champloo
All Gundam series
Vandread
Moonphase
Gokusen
Fullmetal Alchemist
Ghost in a Shell
Gokusen
Wedding Peach
Soul Hunter
Zatch Bell
Hikaru no Go
Blood+
Elfen Lied
Air
Air Gear
To To
Pokemon
Sailormoon
Digimon
Yugioh
Cardcaptor
Midori Days
Pumpkin Scissors
Shuffle
Chorno Crusade
XXX Holic
Glass Fleet
Vampire knight
Axis powers
Naruto
Bleach
Crimson hero
Spiral
Ginsen

looking at everyone else's list i have to admit i'm a little intimidated haha... but i have only been a fan of anime for the past 3 or 4 years so i have lots to catch up on...
anyhoo, here is my list... well, as close as i can get it anyways...

series i've seen all episodes
fullmetal alchemist
inuyasha
s-cry-ed
trigun
samurai champloo
eureka 7
cowboy bebop
trinity blood
gokusen
blood+
ergo proxy
fruits basket
saiyuki reload
samurai deeper kyo
witchblade
hell girl
paradise kiss
perfect girl evolution
vampire knight
death note
bokura ga ita
code geass
d.n.angel
escaflowne
flcl
outlaw star
paranoia agent
avatar the last airbender (does that even count as an anime though?)

ones i'm still watching or haven't finished yet
fullmetal alchemist: brotherhood
bleach
naruto
naruto shippuden
hana yori dango
tenjho tenge
saiyuki
romeo x juliet
vampire knight guilty
moribito: guardian of the spirit
ouran high school host club
red garden
neon genesis evangelion

this isn't even the list of movies, just strictly series... it's not too bad, although i am probably forgetting some

I've seen TOO much... Shall I list them? Here we go...

Sailor Moon
Tokyo Mew Mew
Naruto
Inuyasha
Black Blood Brothers
Nightwalker
Bleach
Trinity Blood
Strawberry Panic
Death Note
Fullmetal Alchemist
Kaleido Star
Ikki Tousen
Saiyuki Reloaded
Ouran High School Host Club
Blood+
D.N.Angel
Fruits Baskets
Majin Tantei Nougami Neuro
Mythical Detective Loki
Moon phase
Wedding peach
Air gear
Spiral
Princess Tutu

Plus more... *scratches head*

But, not all of these have been fully watched.

i have seen over 400

I have watched so much anime that I lost track on how many series that I watched. But I can give you guys a list of the series that I own. Which a small and humble collection. ;)

Anime series I own:
Speed Grapher
The Galaxy Railways
Gunslinger Girl (the first series)
Shingu
Steam Detectives
The Big O (both seasons)
009-1

Movies and OVAs I own:
Vampire Hunter D
Vampire Hunter D: Bloodlust
Tokyo Babylon
Fullmetal Alchemist The Movie: Conqueror of Shamballa

Now here is a brief list of anime that I like. ;)

Hellsing (both TV and OVA)
DOGS OVA
Black Jack
The Third: The Girl With The Blue Eye
Captain Harlock
Captain Herlock
07-Ghost
Time of Eve
Death Note
Code Geass
Trigun
Cyborg 009

That is all I can think of right now.

I love anime:heart: As far as some of the ones I've seen are:
Ghost Hunt
Blood+
Naruto
Cardcaptor Sakura
Pokemon
Digimon
Bleach
Gravitation
Jyu-Oh-Sei
Yugioh
Kiddy Grade
Outlaw Star
Trinity Blood
Fullmetal Alchemist
Sailor Moon
Death Note
Spiral
Inuyasha
Gundam Wing
Escaflowne
Spirited Away
Princess Monaoca... or something like that
Howl's Moving Castle
Zatch Bell
Dragon Ball
Kiki's Delivery Service
and a lot more i can't remember at the moment...
I watch way to much anime:|

ZOMG! I love Escaflowne!! The anime series is better than the movie, but both are really good!
I miss Trigun. It used to always be one Adult Swim. That and Inuyasha--but the ending for Inuyasha really bugged me! I can't believe it didn't bfing ANY closure! No little Inugome babies, no nothin! Boo! Anyway, yeah, most of the anime on Twisted_Angel's post are awesome!
I haven't seen Cardcaptors in forever. It's really funny how, as a kid, I never noticed some of the bad inuendo's though...Some of the things are kinda creepy. But I love the show as a whole. And the sequal-ish thing...y'know Tsubasa? It's AMAZING! It has EVERYONE from Clamp!! Yay!

Naruto
Naruto Shippuden
Bleach
Dragonball
Dragonball Z
Dragonball GT
Pokemon (Kanto and Jhoto)
Digimon (1st and 2nd season only, those were cool)
Death Note
D.N.Angel
Mai HiME
Mai Otome
Mai Otome Zwei
Mai Otome S.ifl
Midori no Hibi
Elfen Lied
Chobits
Suzumiya Haruhi no Yuutsu (The Melancholy of Suzumiya Haruhi)
Suzumiya Haruhi no Yuutsu S2 (The Melacholy of Suzumiya Haruihi S2)
Kimi ga Nozomu Eien (Kiminozo)
Akane Maniax
Kimi ga Nozomu Eien ~ Next Story~
Love Hina
Inuyasha
Inuyasha kanketsu-hen (The Final Act)
School Days
Ouran High School Host Club
Goshuusou sama Ninomiya kun
Shuffle!
Shuffle! Memories.
Spice and Wolf
Spice and Wolf II
I"S Pure (Aizu Pure)
kore ga watashi no goshuujin sama (He is My Master)
5 Centimeters Per Second
Hanbun no Tsuki ga Noboru Sora
Final Approach
W~Wish
Psychic Academy Aura Bashou
boku wa imouto ni koi wo suru(I love my little sister)[yes i know it sounds very wrong but willyou people just pay attention to the story?]
School Rumble
School Rumble Ni Gakki
School Rumble San Gakki
Neon Genesis Evangelion [Shin Seiki Evangelion]
REC
Last Exile
The Tower of Druaga - Aegis of Uruk
The Tower of Druaga - Sword of Uruk
Saiunkoku Monogatari
Saiunkoku Monogatari 2
ef - a tale of memories
ef - a tale of melodies
Nagasarete Airantou
Ima, Soko ni Iru Boku (NOW and THEN, HERE and THERE)
Code Geass: Lelouch of the Rebellion
Code Geass: Lelouch of the Rebellion R2
Girl's Bravo
Karin
Amaenaideyo! (Ah My Buddha!)
Amaenaideyo!! Katsu!! (Ah My Buddha!! Katsu!!)
La Corda de Oro - Primo Passo
La Corda de Oro - Secondo Passo
Shangri-La
Saki
Strike Witches
H2O ~ Footprints in the Sand
Kenko Zenrakei Suieibu Umisho (Umisho)
Valkyria Chronicles
Time Of Eve
Tayutama
Tora Dora
Pale Cocoon
5 centimeters Per Second
Placed promised in Our Early Days
Voice of a distant Star

Yeah that's right.....

Karin
Dragon ball
Dragon Ball Z
Dragon Ball GT
Dgry-man
DNAngel
Fruits Basket
Inuyasha
Papa to kiss in the Dark
Naruto
Raroni Kenshen
Sailor Moon
Cowboy Bebop
Saiyuki
Saiyuki Reload
Tsubasa
Vampire Night
Hellsing OVA
Hellsing TV
Trinady blood
Wolf's Rain
YuYu Hakusho
Gravitation
Princess Princess
Suikusho
Tenjho Tenge
Yu-Gi-Oh
Trigun
Outlaw Star
Fullmetal Alchemist
FCLC
Samurai Champloo
Ouran High Host Club
Loveless
Death Note
Black Jack
Bleach
Genshiken
G Gundom
SD Gundom
Zatch Bell
Blood +
Digimon
Pokemon
Shuffle
Hetalaia
Mew Mew Power
.Hack//Sign
Tenchi Moiyo
Tenchi in Tokyo
Tokko
Yugioh
Cardcaptor
Midori Days
Pumpkin Scissors
XXX Holi
Pokemon
Black blood Brothers
Ghost in a Shell
Zatch Bell
Strawbery panic
And a lot more, but I just cant remember

WOW!!! This is going to be a list, but I am pretty sure I don't get all of them.

Sailor Moon
Pokemon
Digimon
Inuyasha
Trinity Blood
Death Note
Bleach
Revolutionary Girl Utena
Cardcaptor Sakura
Rozen Maiden
XXXholic
Fushigi Yugi
Magic Knight Rayearth
Tsubasa
Gravitation
FAKE
Midnight Panther
Legend of Lemnir
Yu-gi-oh
Pita Ten
Sugar Sugar Rune
Digi Charat
Fullmetal Alchemist
Naruto
Ghost Hunters
Fullmetal Panic
Neon Genesis Evangelion
Prince of Tennis
Trigun
Cowboy Bebop
X/1999
Yu Yu Hakusho
DNAngel
Fruits Basket
Onegia Teacher
Azumanga Daiou
Rurouni Kenshin
Naruto(in Japanese)
Tokyo Mew Mew(not Mew Mew Power)
I My Me Strawberry Eggs
One Piece
Shaman King(in Japanese)
Gundam Wing
Tenchi Muyo
.hack//sign
Ghost Hunter
FLCL
Tokyo Babylon
Metropolis
Spirit Away
My Neighbor Totoro
Castle in the Sky
Princess Mononoke
Peach Girl
Shugo Chara
Lucky Star
Comic Party
Angel Sanctuary
Ranma 1/2
Moon wo Sagashite
Ai Yori Aoshi
Chance Pop Session
Gatekeepers
My-Hime
Nior
Macross Plus
Ghost in the Shell
Ninja Scroll
Petite Princess Yucie
Haibane Renmei
Paniponi Dash

I said I was going to add more, and I did. But still not the end of it.

im one of those people that watch multiple animes at a time although i have finished a couple including fullmetal alchemist, ouran high school host club, and sailor moon, with some others that i can't remember

ive seen alot... hmm let me think....

Hell Girl
Shikabane Hime
Bleach
Death Note
Ronin Warriors
Rozen Maiden
Revolutionary Girl Utena
Gundam Wing
Actually almost all the Gundams
Dragon Ball, Z, GT
Zoids
Pokemon (lol)
Escaflowne
Dokoro-Chan (freakin weird)
Azumanga Daioh
Samurai Champloo
Fullmetal Alchemist
Card Captors
Yu-Gi-Oh
Ouran High School
Serial experiments Lain
Scrapped Princess...


yea I'm done typing... for now :)

I don't keep track.
I'm more of a Manga reader but I have watched:
Inuyasha,
Pokemon,
Sailor Moon,
Cardcaptor Sakura,
Lucky Star,
K-On!,
Hirgurashi,
Samurai 7,
Case Closed,
Death Note,
Clannad,
and etc.

Geeze, this'll be fun. :P

Ouran High School Host Club.
Teppen Toppen Gurren Laggan.
Kiki's Delivery Service.
Azumanga Daioh.
Cowboy BeBop.
The Melancholy of Haruhi Suzumiya.
Gravitation.
Sailor Moon.
Dragonball Z.
Tenchi Muyo.
Inuyasha.
Chibi Vampire/Karin.
Case Closed.
Flame of Recca.
Gundam Wing.
Mushi-Shi.
RomeoXJuliet.
School Rumble.
GreenGreen.
Fruits Basket.
Fushigi Yuugi.
Rozen Maiden.
Lucky Star.
Princess Tutu.
Final Fantasy Unlimited.
Yu Yu Hakusho.
Yu-Gi-Oh.
Big O.
Lupin III.
Samurai Champloo.
Samurai X.
Escaflowne.
Ponyo.
Castle in the Sky.
Excel Saga.
Pokémon.
Digimon.
Love Hina.
TriGun.
Vampire Knight.
Ai Yori Yoshi.
Bleach.
Naruto.
Outlaw Star.
Avatar:The Last Airbender.
Wedding Peach.
Tsubasa Reservoir Chronicles.
Chobits.
Lovely Complex.
Cardcaptor Sakura.
Vampire Hunter D.
Black Lagoon.
Full Metal Alchemist.
DN Angel.
Hamtaro.
Death Note.
Code Lyoko.
Angel Sancutary.
Black Cat.
Witch Blade.
X/1999.
One Piece.
Ultramaniac.
Tales of Symphonia.
Tokyo Mew Mew.
Golden Boy.
DearS.
Junjuo Romantica.
Wolf's Rain.
Kare Kano.
Getbackers.
Milk-Chan.
Moon Phase.
Ranma 1/2.
Shin-Chan.
Revolutionary Girl Utena.
Pani Poni Dash.

[I think there might be more, but I really can't remember. :shock:]

Hm... Let's see if I can do this alphabetically.
.Hack//Sign
Angelic Layer
Bleach
Blue Dragon
Card Captor Sakura
Case Closed
D-GrayMan
Death Note
Devil May Cry
Dragonball
Dragonball Z (Here in Canada we say Zed... Least I do)
Eureka Seven
Fruits Basket
Full Metal Alchemist
Geneshaft
Ghost in the Shel
Gundam Wing
Gundam Seed
Hellsing
Inuyasha
Naruto
SaiKano
Sailor Moon (Admittedly my sister got me into this at a young age and I did see all the English dubbed episodes)
Shaman King
Tri-Gun
Valkyria Chronicles
Vampire Knight
Vampire Hunter D
Vision of Escaflowne
Wild Arms: Twilight Venom (Saw the first episode a while ago. Want to get into the series now)
Witch Hunter Robin
Yu-Gi Oh (First few seasons... later ones got... weird)
Zatch Bell
Zoids

Man recalling all those old animes made me wanna go watch them again. Especially .Hack//Sign... That's what got me into anime.