To Date Top 10:

-Code Geass/Code Geass R2
-Death Note
-Cowboy Bebop
-Full Metal Panic/Full Metal Panic! Fumoffu
-Full Metal Alchemist Brotherhood
-Trigun
-Samurai Champloo
-Arakawa Under The Bridge
-Ranma 1/2
-K-On! and K-On!!

Currently Watching; Gurren Lagann.

NANA made me cry like, alot durin the 30s on.... ) :

Oi...there is almost too many to list but here are some top choices for me:

-Bleach
-Shakugan no Shana
-Kuroshitsuji
-Full Metal Alchemist (The Original.)
-Samurai Champloo
-Avatar The Last Airbender (I know it's American but still counts as anime)
-Mushi-shi

I would say Genshiken and Great Teacher Onizuka would be my faves

I have way too many. >>;; I pick up new favorites whenever I fall head over heels for a series (or, in one case, an entire franchise).

Current Favorites:
*Macross (Frontier, Plus, Zero, SDF, have yet to see 7 and the other movies)
*Tengen Toppa Gurren Lagann
*Durarara!!
*Ookami-san to Shichinin Nakama-tachi
*Fullmetal Alchemist
*Clannad ~After Story~

Tengen Toppa Gurren Lagann (anime), Mahou Sensei Negima! (manga), umm........ Fate/Stay Night (anime/h-game), Shakugan no Shana (anime), Zero no Tsukaima (anime) Mai-HiME/Mai-Otome (anime), everything Nanoha (anime), Lucky Star (anime), Suzumiya Haruhi no Yuutsu (anime), and umm... oh, Naruto (manga), Bleach(manga), Bakuman (manga), and a lot more...

There alot on my list but i will put down my all time favorite ^ ^

Anime:
CLANNAD
CLANNAD ~After Story~
Magic Knight Rayearth
Hayate no Gotoku
Magical Girl Lyrical Nanoha
Air Tv
Karin
Angel Beats

Manga:
Inubaka
Inukami!
Black Cat
Legend of Zelda (Any)
Fall in Love like a Comic
Karin (also known as Chibi Vampire)
Magic Knight Rayearth

Adding to my list:
*Panty & Stocking with Garterbelt
(Gainax has done it again~~! <3)

agreed!

My favorite is soul eater. i also like higurashi lucky star hetalia death note and thats about it i havent gotten into much lately i need to start tho.

Kuroshitsuji.

Pretear! <3

Elfen Lied, Code Geass, .hack//, Princess Tutu, Kuroshitsuji, Sailor Moon. k-on,

One Piece

An actual list,
-Kuroshitsuji
-Gravitation
-Shuffle
-Please Teacher
-Kissu Kissu Kokou
-Ouran High School Host Club
-InuYasha
-Otomen
-Full Metal Alchemist
-Romeo X Juliet
-Death Note
-Lucky Star
-The ____________Of Haruhi Suzamiya
-Soul Eater
-Higurashi
-Hot Gimmick
-Gatcha Gatcha The next revolution
-Salad days
-Dary Milkk
-XXXholic
-Bleach

-Black rock shooter

And so, so many more

My favorite anime would have to High School of the Dead. I just hope they make a second season of this anime but I doubt they will.

It's still relatively new, so we may have some hope for something later on, considering the manga is also still ongoing~c:

My ultimate all time favorite would be Fullmetal Alchemist. Some others that I've also loved are Yu Yu Hakusho, Hetalia, Eureka Seven, and Trigun.

I'm a fan of Gundam. I like most of the series, but if I had to pick a favorite... I'd say Gundam Seed.