What are your favorite Manga Series'?

Akira is definitely my favorite manga. It is much better than the movie, in my opinion and is the only manga I have read so far that is equal to the greats of western comics.

Can't list my faves in specific order, but generally I collect them all because I like them, so here's my manga that I like.

D.N.Angel
Tokyo Mew Mew
Cowboy Bebop
Samurai Deeper Kyo
Elemental Gelade
Pet Shop of Horrors
13th Cat (I only have one issue)
Sorcerers and Secretaries (I think there are only two manga to this one, but I've only got one of them)
Earthian (Shounen-Ai)

There are more but I forget XD

edit: Oh yeah! And I love the new Manga Shakespeare adaptions XD

I guess it's about time I responded to this. I've never really been a manga person to be frank. I'd rather watch the anime unless the two are radically different from one another. I really like One Piece so I imagine I'd like the manga, but as it stands my favorite manga is:

Fist of the North Star

Mostly because I really like martial arts stuff and it's one of the rare occasions were I read the manga before I saw the anime and liked the manga more. Also, because Kenshiro kicks ass.

Hmm. Gensomaden Saiyuki, Bleach, and I used to collect Chobits too. Am currently eyeing the Deathnote books as well. Loved the series, want to see the manga art for those.

Also liked the manga print of Vampire Hunter D.

Ouran, Bleach, NANA. OH GOD NANA. I don't know WHY I like it, I just DO.

Yu-Gi-Oh (especially the first series. and not the american anime. it sucks)
Hellsing
Azumanga dioh
Tokyo Mew Mew (not ala mode, though)
my cat loki
dramacon
cyborg 009 (still need to finish collecting that)
priest
her majesty's dog
bizenghast
blade of heaven
sokora refugees (however, it's on hiatus, and may never come out- and not for innocent children)
i.d. entity (need to finish it)
chobits
full metal alchemist
and what little there is of princess resurection

...
i read too much of this stuff... (and there's polly more, but i'm not at home right now)

The .hack series
Black Lagoon comes in a dead second....

Pita-Ten!! But One Piece is a (Very) close second.

I don't read much manga, but I DO read the Sonic Comics. Dunno if they count as manga though.

I also read Mikki Falls and my personal fave, KINGDOM HEARTS!

Gosh, this is going to be a LONG list...

Anything by CLAMP. xxxHOLiC, Cardcaptor Sakura, Tsubasa: Reservoir Chronicles, Angelic Layer... yeah.
Ouran High School Host Club. (The local anime club wants to do a fandub of it. XD It should be interesting).
Naruto (I know, I know...)
FullMetal Alchemist. REALLY love this series.
Oh! My Goddess! (or Ah! My Goddess or Ah! Megami-sama!) It was the manga that first got me into the rest.
Death Note (I blame my insane fangirling buddies. But I'm trying to force them to play NiGHTS! ^^)
And Avatar: The Last Airbender. (If it really counts.)

I liked DNAngel too, same with Dramacon and Tokyo Mew Mew. Any Pokemon stuff is awesome. ^^ I personally prefer Kingdom Hearts the game over the manga, but whatever.