Darker Than Black and Guilty Crown are my top 2!
Series

Neon Genesis Evangelion
Mirai Nikki
Nana
Clannad
High School DxD
Oh My Goddess!
Kanon
Toradora
Death Note
Full Metal Panic Fumoffu
Higurashi no naku koro ni
City Hunter
Hokuto no Ken
Chobits

Movies

Howl's Moving Castle
Spirited Away
The Girl Who Leapt Through Time
Princess Mononoke
Castle In The Sky
Voices Of A Distant Star
Kiki's Delivery Service
Movies:
Sen to Chihiro no Kamikakushi (Spirited Away)
Ookami Kodomo no Ame to Yuki (The Wolf Children Ame and Yuki)
Kaze Tachinu (The Wind Rises)

TV:
Tokyo Magnitude 8.0
Sword Art Online
Aishiteruze Baby★★
Great Teacher Onizuka
Paradise Kiss
Shakugan No Shana I & II
Suzumiya Haruhi no Yutsu
Ouran Koukou Host Club
Nana
Zero no Tsukaima
Romeo x Juliet
Sola
Clannad: After Story
Steins;Gate
Mahou Shoujo Madoka★Magica
Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai.
Nisemonogatari
Accel World

OVA:
Rurouni Kenshin: Meiji Kenkaku Romantan - Tsuiokuhen
Series
Fullmetal Alchemist: Brotherhood
Nagi no Asukara
Daa! Daa! Daa!
White Album 2
Kaleido Star
Magi (both seasons)
Princess Tutu
Cardcaptor Sakura

Movies
Spirited Away
Hotarubi no Mori e
Howl's Moving Castle
Tale of Princess Kaguya

I have a lot!

Dragon Ball, DBZ, Ayashi no Ceres, Fushigi Yuuri, Kyou Kara Maou, Shin Seiki Evangelion, Serial Experiments Lain, Karneval, Loveless.
currently 
Kuroko No Basuke !!!
  • Naruto (Shippuuden)
  • Attack on Titan
  • Death Note
  • Inu Yasha
  • Vampire Knight
  • Black Butler
Updated List:

Top Favorites:
  • Clannad After Story 
  • Monster 
  • Rose of Versailles 
  • Itazura Na Kiss 
  • Nodame Cantabile
Other Favorites:
  • Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai 
  • NANA 
  • Steins;Gate 
  • Death Note 
  • Romeo Blue Skies 
  • Welcome to the NHK
Higurashi no Naku koro ni and Higurashi no Naku koro ni Kai and Death Note. I have other favourites but those 2 are my top favourite ^_^.
  • Death Note 
  • NANA 
  • Gokusen 
  • Ao no Exorcist 
  • Kaichou Wa Maid Sama  
  • Tonari no Kaibutsu-kun
1. Fullmetal Alchemist: Brotherhood
2. Eureka Seven
3. Psycho-Pass
4. Mushishi
5. Natsume Yuujinchou
Marmalade boy, Lovely complex, Fairy Tail and Noragami 
  • Monster
  • Noein
  • Death Note
  • Ano Hana
  • Toward the Terra
  • Steins Gate
  • Vampire Knight
This is harder than choosing a fav drama but...These are the animes i personally adore:

Durarara/Baccano
Sayanora Zetsubo Sensei
XXX Holic
Samurai Champloo