Love Hina. It was the first series I actually got into alot. I am a huge fan of Ken Akamatsu's art and quirky sense of humor which I try and project into my art and humor.
Kare Kano. I like the blend of humor, angst, romance, and the problems of everyday life. I love how each character visibly changes from being a bug to a full-bloom flower.
Neon Genesis Evangelion: The artwork in this series is just phenominal. As well, this and Naruto were the first manga I bought. As well, being a fan of the Eva philosophy, I love the dialouge and the ideals shown into this series.