Soul Eater, Fma and Jyu Oh Sei were all awesome, but i pick Darker Than Black seeing as how its my all time favorite. Kinda surprised FMA and Ouran weren't topping the list. I have yet to see Eureka 7 but i want to bad. I didnt really like Wolfs Rain tho.
Darker Than Black... I just loved the characters, plot, and atmosphere of it all. That choice wasn't easy among the likes of Eureka Seven, Fullmetal and Wolf's Rain though. I enjoyed all of those shows immensely.
Otherwise, this is a tough question. I adore Eureka Seven and Soul Eater, Ouran was awesome, and Darker than Black was pretty awesome too. Cowboy Bebop is classy and amazing, and the first FMA was pretty cool. I still need to see RahXEpheon and Scrapped Princess, and Wolf's Rain was okay from what I saw. I's probably have to say Ouran, though Eureka Seven and Soul Eater are close behind, it would be Soul Eater if not for the anime-only content.
Darker than Black > Eureka seven
I have a few reasons for this
I feel like I am writing a speech right now. If you don't want to read this, just skip my post.
It felt like way too much time was spent on the romance between Renton and Eureka. Their relationship made no sense, and seemed to be held together by a thread. The animation quality was amazing, but the story just seemed a little too political to interest me.
Darker than Black had so many times where it really was able to trigger my emotions. It allowed me to truly feel something time and time again, where Eureka Seven was just the mindless watching of Eureka and Renton cry out each other's names over and over.
Don't get me wrong, I enjoyed both shows, but Darker than Black was just so more captivating than the romance-y political mush that was Eureka Seven.
Many are really good but Wolf's rain is the best ever to me, plot, characters, drama, Music, there is nothing like wolf's Rain, the feeling while watching.. you can't find this just in wolf's Rain by a unique way.
Rahxephon has always been my favorite. But I love anything from Bones. I don't like Shojo, but I like Ouran. I haven't been liking shonen anime lately, but I am enjoying Heroman. They have 3 of my top anime ever, Bones can make any anime great.