Anime Shows I've watched: Digimon, Pokemon, Zatch Bell, Yu-gi-oh, Tenchi Muyo, Tenchi Universe, Dragon Ball, Dragon Ball Z, Hellsing, Trigun, Ghost in a Shell, Full Metal Alchemist, Full Metal Alchemist: Brotherhood, Cowboy Bebop, Ruroni Kenshin, Inuyasha, Naruto, Bleach, Hellgirl, XXXHolic, Code Geass, Samurai Champloo, Yu Yu Hakashu, Death Note, Ouran Host Club Academy, Wolf's Rain, Mushi-shi, Gunslinger Girl, Queen's Blade, Trinity Blood, Big O, Card Captors Sakura, Golden Boy, Jyu-Oh-Sei, and Darker Than Black.
I'm sure there are more I just can't think of them at the moment. I haven't included anime that I've tried to watch, but wasn't interested/lost interest for example Gundam, Romeo X Juliet, One Piece, Dragon Ball GT, and Tsubasa Chronicles.
Anime Movies I've watched: Akira, Summer Wars, The Girl Who Leapt Through Time, 5 Centimeters Per Second, Graveyard of the Fireflies, Nausicaa of the Valley of the Wind, My Neighbor Totoro, Kiki's Delivery Service, Porco Roso, Princess Mononoke, Spirited Away, Howl's Moving Castle, Ponyo On A Cliff, The Cat Returns, Tales from Earthsea, Origin: Spirits of the Past, and Steamboy.
Tales of Symphonia & Final Fantasy Advent Children should get an honorable mention. However they were movies based off of video games, and not anime/manga.
There are more movies I've watched that are connected to anime shows. But I'd feel like I would be repeating myself if I added them to the list (like the FMA movie).
Anime I'm currently watching: Naruto & Aquarion
Manga I'm currently reading: Naruto & Bleach
Anime that I'm planning on watching: Afro Samurai, Samurai 7, Speed Grapher, Kaze no Stigma, Melancholy of Haruhi, Appleseed, and Moribito.
Phew! Now on with my opinion (yes I like to make large posts)
Since you like Aquarion, I have to ask, do you like those Mecha-based anime shows (you know, giant robots with usually 1 pilot)? I'll be honest, I'm not a huge fan of those kind of anime (especially the Gundam series). The only ones I've been able to muster are Aquarion and Code Geass. And since you like Aquarion, maybe you should take a look at Code Geass. In a nutshell it's like an anime based on games of Chess (sounds boring, but it isn't) using Mechas on the battlefield.
Soul Eater wasn't that bad, so maybe give it a second chance (if you like Naruto, then you'll like Soul Eater).
Hmm one more recommendation: Since you like the warm-hearted Elrick Brothers and the devastated trials they had to go through in life, might I recommend to you Trigun? It's about a mysterious lone gunman named "Vash the Stampede" who has a large bounty on his head for destroying a city.
Feel free to talk about anime/manga with me anytime. If you remember any more anime you've watched, then I might have a better chance of giving you some better recommendations.
-BGS