1. One Piece
2-10 (No order Srry guys!!!)

~Hunter x Hunter
~Attack on Titan
~Naruto
~Fairy Tail
~Hitman Reborn
~School Rumble
~Beelzebub
~Full Metal Alchemist
~Symphogear

Runner Up

Deathnote
DeadmanWonderland
Gantz
Phantom
Speed Grapher

Dragon Ball Z

Bleach

Thanks for the great response.

I believe that to a large extent some internet people feel kinda superior when they suggest niche anime (not referring to anyone here, btw). Some feel like that they are special in their own way and admitting liking something that everyone else does, takes away some of their uniqueness. It's like when they go on rage mode when a popular girls claims she's a nerd. There was a video of a guy being upset about people calling themselves nerds when they're popular and have a good social life. Anyway, I could go on for ever, but I won't.

As for Naruto, I guess I disagree with most people who don't like the fillers. I think they're pretty awesome. I liked the yota episodes, when everyone else hated them. I pretend that the manga doens't exist, so Yota becomes an important part of Naruto's life, as it's thanks to him that he first makes friends with Sakura and the others. The only one filler that I hated (I'm sure there are more, just nothing else comes to mind) was the one where his clones rebel and tie him to the ship. There were quite a few cases where I wasn't sure if an episode was a filler or not. They were that good (imho). What happened between between Jiraya and Pain was simply amazing for me and no anime comes close to it. I don't expect 500+ to be all perfect, so I don't judge it that harshly. I'd rather watch 500 episodes than 150 really intense ones. Death Note wins because the writing is simply that good. I think that people who complain about Naruto should find a filler list and skip those. 

Just my two cents. 

In no real order:

Serial Experiments Lain
Street Fighter II V
Azumanga Daioh
Shin-Chan
Speed Racer
Samurai Pizza Cats
Cyber-Six
Dragon Ball

Akira and Princess Mononoke too but those are movies.

I feel old..

Damn straight it's fabulous

Glad Clannad and Fullmetal Alchemist Brotherhood are getting a good amount of love. The original FMA was just so bad in my opinion I can't even watch it anymore.

I should have said in no order either, I only know One Piece is first for me too lol.

I'm looking for a short (couple of seasons like Death Note) anime! I don't want to get into something that has hundreds and hundreds of episodes.

I've only seen Death Note. What's the best out there?? I'm really a noob in anime.

Do you read the manga.? (if your caught up post here!) http://gamrconnect.vgchartz.com/thread.php?id=174164&page=1

One Piece is Overall my favorite, Even though many others beat it in certain areas. Fairy tail i would put in my 2nd but Hiro kills it with that F-ing Plot Nakama powerup/Fanservice. I swear First 5 years of Fairy Tail were great then he doesn't want anybody to lose and every Chapter has to have Boobs and/or Ass -_-. Im not trying to read an Ecchi manga, its too much sometimes!

Have you watched Hunter x Hunter or Hitman reborn?

Try Full metal alchemist: brotherhood or Code Geass. Both are amazing and short anime. They are a little bit longer than Deathnote though.

Fullmetal Alchemist Brotherhood and The World God Only Knows are both great.