Everything I've watched (the ones I remember: My Anime List
This is some of what I have seen/am watching:
Amagami SS - 2nd series has been announced - Like it, very casual, and somewhat humorous. Recommended.
Ao no Exorcist - First season about to end I believe - Action with some comedy. Recommended.
Blood-C - Only 9 eps so far but I like it - A very dark and gory anime.
Code Geass: Lelouch of the Rebellion - Finished, 2 season - Mecha/military anime with a good story. Recommended
Death Note - Finished - A very good thriller anime. Recommended
D.N.Angel - Finished - Been a very long time since I saw this. I recommend the manga instead of the anime.
Elfen Lied - Finished - Gory anime, with a very dark story. Recommended
Fairy Tail - Still going with +90 eps - Very funny with good fantasy action. Strongly recommended
Ghost Hunt - Finished - A anime about - you guessed it - ghost hunting! I enjoyed it.
Green Green - Finished - Ecchi comedy, hilarious. Recommended
Fullmetal Alchemist: Brotherhood - Finished - One of the best animes I've seen. Comedy action, with a superb story. Strongly Recommended.
Hana-Saku Iroha - 24 eps so far - A very casual, slice-of-life anime, something I watch when I don't have anything else to watch.
Hidan no Aria - Finished - A action anime with potential to become great but ended at 12 eps. Recommended.
Hoshizora e Kakaru Hashi - Finished - Casual anime, can barely remember it.
KimiKiss Pure Rogue - Finished - Romance, slice-of-life anime with some comedy. I enjoyed it.
Kimi ni Todoke - Finished, 2 seasons - Romance-comedy, I really liked this one for some reason. Recommended
Kore wa Zombie Desuka? - Finished - A very odd action-comedy anime :P
Naruto - Finished - Not much to say, other then watch it. Can skip all the god damn fillers tho.
Naruto Shippuuden - +220 eps so far - Hate fillers but I like the Naruto story overall. Recommended.
Nurarihyon no Mago - 2nd series still going - Many don't like this one, but I recommend it. Action-comedy, swordplay. Recommended.
Nyan koi - Finished (hoping for a 2nd series) - Utterly hilarious. Pure comedy, a must see! Strongly recommended. (!)
One Piece - +510 eps and still going - Seen them all, do I need to say more? Pirate anime with an awsome story and great comedy. Strongly recommended.
Samurai Deeper Kyou - Finished - Recommend the manga instead of the anime.
School Days - Finished - Uhm.. Wierd? Let's - just say, if you watch this, you won't ever forget it. Psychological anime.
Steins;Gate - +20 eps still airing - Only seen a few, but seems to be good.
Yu-Gi-Oh! - Finished - I like it, wish I had seen it in Japanese tho. Recommended.