My top 10 series list.
I only put first seasons on here - but sequels are equally important! Clannad After Story and Mushishi Zoku-Shou are also near and dear to me!
These are in a vague order - Clannad is definitely my all time favourite...
From both in local TV and cable TV:
A Little Princess Sara
A Little Snow Fairy Sugar
Ah! My Goddess
Ai to Yuuki no Pig Girl Tonde Buurin (Super Pig)
Akazukin Chacha (Red Riding Hood Chacha)