My Top favorite Anime are:

1. Dragon Ball Z / Naruto / One Piece

2. Death Note

3. Cowboy Bebop and the Anime "X"

Its really hard to say. And yours ? Top 3 or 5 maybe ? Its exciting for me. I wish you all a great day.

No order

Madoka Magica
Steins;Gate
Serial Experiments Lain
Ghost in the shell (all except Arise)
Yuru Yuri

The Last Airbender
SAO
The Legend of Korra

Gokukoku no Brynhildr
Elfen Lied
Another

Toradora
Noein
Gundam 00
Usagi Drop
Hourou Musuko

Runner ups : Shana, OreImo, OreGairu, True Tears, Hanasaku Iroha.

1. Clannad/After Story
2. Angel Beats
3. Fairy Tail
4. Parasyte
5. The World God Only Knows.

Was great the first few episodes (4-6?) but then the creepy atmosphere went away in favor of shock value.. Rest was still enjoyable but in a different, less intriguing way

1. Code Geass(Not R2)
2. Fullmetal Alchemist Brotherhood
3. Cowboy Bebop

In any order after 3:

Steins;Gate
Fate/Zero

My former favorite top 5 back during the 1990's/early 2000's during my kid years:

1. Dragonball Z(or series in general except GT)/ Yu-Gi-Oh!/ Pokemon
2. Yu Yu Hakusho
3. Gundam
4. Rurouni Kenshin
5. Sailor Moon

No order

Naruto (despite all the fillers :/ )
One piece
Fairy tail
Death Note
FMA brotherhood

Attack on Titan ( added as 6th entry cause it only had one season so far, but was so awesome!)

True, but it was the first anime I ever watched, so it holds a special place in my heart :p