Series of choice, one should select.
Ai Yori Aoshi & Ai Yori Aoshi Enishi
Aquarian Age: Juvenile Orion/Orion no Shōnen
Azumanga Daioh!
Battle Athletes & Battle Athletes Victory/Battle Athletess Daiundōkai
Blue Gender
Burst Angel/Bakuretsu Tenshi
Candidate for Goddess/Megami Kohousei/Pilot Candidate
Card Captor Sakura/Cardcaptor Sakura/Cardcaptors
Chobits
Comic Party & Comic Party Revolution
Crest of the Stars/Seikai no Monshō, Banner of the Stars/Seikai no Senki & Banner of the Stars II/Seikai no Senki II
Di Gi Charat/De·Ji·Kyaratto
El-Hazard - The Magnificent World/Shinpi no Sekai Eru Hazādo
Final Fantasy Unlimited
FLCL/Furi Kuri/Fooly Cooly
Fullmetal Alchemist/Hagane no Renkinjutsushi
Full Metal Panic!, Full Metal Panic! The Second Raid & Full Metal Panic? Fumoffu
The Galaxy Railways
Gankutsuou - The Count of Monte Cristo
Gravion/Choujuushin Gravion
.hack//Legend of the Twilight (.hack//Tasogare no Udewa Densetsu, .hack//UdeDen or .hack//DUSK)
.hack//sign, .hack// games & general .hack//
Hellsing TV
InuYasha, A Feudal Fairy Tale/Sengoku Otogi Zōshi InuYasha
King of Bandit Jing/Ō Dorobou Jing/Jing: King of Bandits
Kino's Journey: the Beautiful World/Kino no Tabi -the Beautiful World-/Kino's Journey
Kodocha: Sana's Stage/Kodomo no Omocha/Kodocha
Kyou Kara Maou!/Kyō Kara Maō!
Last Exile
Love Hina
Macross
My-HiME/Mai-HiME, My-Otome/Mai-Otome/Mai-ZHiME/My-ZHiME, My-Otome Zwei/Mai-ZHiME Zwei/Mai-Otome Zwei & My-Otome 0/My-Otome 0~S.ifr~/Mai-Otome 0~S.ifr~/Mai-ZHiME 0~S.ifr~/My-ZHiME 0~S.ifr~
Yes, I listed every name of every spinoff I could think of. Do I seem sane to you?
Martian Successor Nadesico/Mobile Battleship Nadesico/Kidō Senkan Nadeshiko
Mobile Suit Gundam SEED/Kidō Senshi Gundam SEED & Mobile Suit Gundam SEED Destiny/Kidō Senshi Gundam SEED DESTINY
Mobile Suit Gundam Wing/New Mobile Report Gundam W
Mobile Suit Zeta Gundam
Najica Blitz Tactics/Najica Dengeki Sakusen
Naruto
Neon Genesis Evangelion/Shin Seiki Evangelion
Ninja Scroll
Omishi Magical Theater: Risky Safety/Omishi Mahou Gekijou: Risky/Safety
Otaku no Video
Please Teacher!/Onegai Teacher
Puni Puni Poemy
RahXephon
Revolutionary Girl Utena/Shōjo Kakumei Utena
Rune Soldier/Mahō Senshi Riwi/Magical Soldier Louie
Rurouni Kenshin: Romance of a Meiji Swordsman/Rurouni Kenshin: Meiji Kenkaku Romantan
Saiyūki/Gensōmaden Saiyūki, Saiyūki Reload & Saiyūki Gaiden
Sakura Taisen/Sakura Wars
Samurai Deeper Kyo
s-CRY-ed/Sukuraido/s.CRY.ed/Scryed
Skyscrapers of Oz
Steel Angel Kurumi
Stellvia
¡Tenchi Muyo! (In all its forms, including movies and spinoffs like Magical Girl Pretty Sammy)
ToHeart
Trigun
Trinity Blood
Wolf's Rain
X (X/1999)