[Diclonius]

I like this series (I have it on dvd plus the christmas and spring special and Love Hina Again); Naru is a prototype tsundere, but I like her cute moments and when she and Keitaro try to be romantic. The old men with their wise thoughts are a nice touch. I also like the soundtrack (especially Yakosoku; it is very moving).
I have read the manga a few times and I must say it is much more explicit than the anime with a storyline that is more complete. I will still like the anime though, but the manga has also earned a place among my favourites.