Interesting.... All those animes that you just mentioned are animes that I haven't watched except for the Haruhi-chan.
-Gundam 00. I only saw the last few episodes and well it was enough for me. I didn't like it.
-Hell girl. I've read the manga. I haven't seen the anime yet.
-Higurashi: I stopped on box set 1. dunno why. it was just the first arc and a small amount of arc 2.
I guess I like the animes that are more on the slice of life like Natsume no yuujinchou etc.