What's your favorite anime and why?

I'd like to know which anime I should watch next, I've already seen quite a few. Among my favorites are: Code Geass, Black Butler, Ouran High School Host Club, Fruits Basket, Darker Than Black, Kanon(2006), Vampire Knight, Cowboy Bebop, GTO, and Kaze No Stigma. So please don't suggest any of these. (Please don't list long animes like Bleach, Naruto, DBZ, etc.) I mainly only watch English dubs, but if it's truly awesome, I'll watch it with subs. Thank you!