Accel world - From the person who wrote sword art online, same universe except further into the future.
Angel beats - Great soundtrack, would've been way better if there were more episodes on the backgrounds of more of the characters.
Another - Partially horror, partially mystery. Once the first death happens it gets interesting.
Aoki hagane no apreggio: Ars Nova - Wanted to try it because of Nano, the singer in the opening, I was not disappointed at what it was and everything done right.
Attack on titan/Shingeki no kyojin - No comment, there are enough already.
Black Lagoon - Badassery all around, just watch it if you haven't already.
Bleach - Fillers are mediocre at best, but if you avoid them it's still great. Reading the manga now that the anime stopped.
Btooom - Explosions. This is where I discovered the singer Nano.
Code Geass - Like death note, though code geass handled the ending way better.
Danganronpa the animation - Murder mystery - the first mistake is to get attached to any character. I've watched the second game on youtube and it's just as great. though in the original one the first two murders were way to easy to figure out.
Dansai bunri no crime edge - I went in not expecting anything great, now I want a sequel.
Death note - It has some good mystery in it, though the end ruined the series for me.
Detective Conan - I had nothing to watch one day when I found this goldmine, it's what gotten me into mystery, shame subtitles take so long. Also it's the longest still running anime, with 18 movies of which the last one isn't out on dvd yet. Add another 3 real life movies done really well, as well as a short real life series
Devil survivor 2 the animation - Based on shin megami tensei; devil survivor 2 (it's for the DS if anyone is interested) it has some of the better action I've seen in anime.
Elfen lied - Known by most people, this was one of the first anime I've watched, very gory, but most people get past that part.
FMA - Great anime, decent compared to brotherhood.
FMA brotherhood - Stays closer to the manga, also has a better ending IMO.
Highschool of the dead - I can sum up the fanbase pretty easily. "When's the sequel?" But sadly enough zombies aren't popular in japan so sequels will probably not come.
K - Highly interesting, movie coming out pretty soon I believe.
K-on - Very known moe anime. I have a keyboard now. I have become Mugi.
Kamisama no inai nichiyoubi - Great show, still waiting for a second season.
Kenichi - Liked it a lot, seems the anime will start up again seeing as there are OVAs continuing the story.
Kill la kill - Awesome and unique art style and background music.
Kuroko no basuke - Sports anime done right.
Little busters - I liked it, don't really know what drew me in so much.
Log Horizon - Like sword art online, except you can respawn. The main character also feels better since he actually thinks ahead a lot.
Magi - Hope a third season will come soon, very awesome do recommend.
Majin tantei nougami neuro - Somewhat mystery with a little bit of humor. Ending was satisfying enough.
Mirai Nikki - Now I like yandere, I'm a psychopath.
Monster - Great setting, but very slow at some parts. Nice ending.
Needless - Very funny, I recommend watching the ending theme first to get deceived into thinking it's something it's actually not.
No Game, No Life - the type of anime where you know the main characters are going to win, it's the journey to how they will win against cheaters that's the interesting part.
Phi brain - After three seasons it finished, predictable story. Overall enjoyable though
Silver Spoon - A slice of life anime that actually interests me. I hope there's more in the future.
Steins;Gate - Time travel and a bit of mystery. Takes a while to get going, once it does it gets awesome.
Sword art online - Very known already, since I've read most of the books online I already know what's going to happen in this season, but I'll still watch it.
Tantei gakuen Q - Like detective conan except the cases are longer. It has an actual ending.
The world god only knows - The god of sim dating games has t get girls in real life before demons take over their heart and destroy the planet. I'm not good at explaining but that's kind of what this is.
And now for the worst anime I've ever seen.
School days - It seems the visual novel was actually good, can't comment on that since I haven't played it.