If you liked the Animatrix anime, the Anime-Planet community thinks you'd like:
Four touching and intriguing stories are set to a backdrop of different songs: a futuristic cop patrols the streets to fight against crime; a girl experiences an out-of-this-world vision of the world after ingesting a variety of pills; a badass battling chick fights her way to happiness and manages to stoke the flame of love; and two lovers meet and exchange a beautiful rose.
If you like Amazing Nuts! you'd also most likely like The Animatrix. Both Anime are an esortment of very different styled animation, featuring a new story with each unique short. Both give a very strange feeling but are both good.
In a world where mankind is at the brink of destruction, one lone scientist has concocted the means to save it: bioroids. These artificial humans coexist with humans in the city of Olympus, under the watchful eye of the supercomputer Gaia -- to stabilize society. The military strongly opposes their use, however, and the elite soldier Deunan may hold the key to saving both the human race and the lives of the bioroids. Teamed up with an old friend, Briareos, Deunan must race against the clock to discover the secret of the Appleseed before countless lives are tragically lost...
Apocalyptic worlds, great big robots, explosions, what more could you need? Big questions about the nature of freedom and humanity itself, you say? Well, you drive a hard bargain, but okay. Appleseed and Animatrix, other than both starting with A, also share the ability to leave your desires for philosophy and destruction equally satisfied.
The year is 2179: humans and robots have colonized Mars. A newer Third-Type robot has been designed to interact undetected in human society. That is, until a man named D'anclaude discovers their secret and starts a movement to wipe them out. Armitage is a Third-Type that works for the police with her partner Ross, and now these two must rid the planet of D'anclaude and his evil plans.
Armitage is cyberpunk defined - it's slick, sexy, gritty, and set in a post-apocalyptic world; oh, and did I mention the lead character is a robot? Animatrix is undoubtedly much more gorgeous, being made many years in the future. Though this might seem to be a strange recommendation to some, I strongly feel that the type of person who likes Animatrix's grim and gorgeous look at a world overrun by machines will love the cyberpunk elements of Armitage, and vice versa.
Ross and Armitage are now living on Mars with their daughter, Yoko. Their peace is interrupted when a riot involving the Thirds takes place -- alerting Armitage to the possibility that someone is trying to manufacture them yet again. After discovering the truth, she must fight not only for her life, but for Ross and Yoko's as well.
These both deal with human/robot relations. In Armitage, however, the robots are seen as hostile, and in Armitage they are sympathetic characters. Both stories show war activity because of the loss of control over robots. They are each kind of dark and have some action.
BLAME! is a very dark and abstract set of 6 shorts which are based on the manga by Tsutomu Nihei. The "story" (if it can be called that) revolves around a man named Killy: a human living amongst clones and androids. His task, it seems, is to collect things known as "net-genes", and to help find the remaining humans that may or may not exist.
Par the obvious sci-fi connection, both are beautifully detailed animations that are snippets of stories forming a larger tale (Animatrix to the Matrix trilogy and Blame! to the manga series of the same name).