Daystar Clarion said:
If you like Kill la Kill, then check out Gurren Lagann, it's by the same guys.
It's so fucking good.
Just watched this a couple weeks ago, Daystar speaks the truth.
I watched the subbed version but I hear the English dub was also really good. I can give you a 48 hour guest pass for Crunchyroll (which has Gurren Lagann available) if you want it. It's made with heart and really uplifting, a nice break from the grimdark cynicism of the next 3 animes I'm recommending below.
Black Lagoon is also pretty damn good, if you like the idea of Quentin Tarantino and John Woo making an anime. It has some seriously kickass female characters, great action scenes, GUNS GUNS GUNS, and some of the later story arcs are fantastic. The only major problem I have is the lack of tension during fights, as the main characters have powerful plot shields while the mooks are less competent than your average redshirt.
I feel Attack on Titan is overrated and that the fanbased tends to overlook a lot of its flaws, but in the end, it's still a good show and is worth your time watching.
Fate/Zero if you want something incredibly mature, well written, fairly intelligent and made using a budget that could fund a medium sized war. There is no fanservice, which I'm sure many here would appreciate, but considering you watch Kill la Kill, I don't think that's a factor.
Ghost in the Shell: Stand Alone Complex is an intelligent anime set in the world in which humanity itself has been digitized. If you find transhumanism interesting, take a look at this. It's basically a cop show, except those cops are cyborgs that work with AI tanks who fight cybercrime (such as brainhacking and other horrors that happen when you turn the soul into data).