This is why I love anime

Because they get ZERO credit on the official website or in the trailer, you should know that animation studios involved (fuck the directors!) include:

Madhouse
This studio does EVERYTHING from old classics like Vampire Hunter D and Ninja Scroll to the newer adaptations of Satoshi Kon's films (Perfect Blue, Tokyo Godfathers, Paprika). They've also contributed to the animated The Boondocks cartoon, the Ghibli film Howl's Moving Castle, and a host of other regularly syndicated anime.

Production I.G.
Another amazing animation studio. They've worked on the Ghost in the Shell movies and TV series (way better than the movies, in my opinion), FLCL, Patlabor (oldie!), and the Evangelion movies. They were also brought in for that animation sequence in Kill Bill vol. 1.

Studio 4°C.
They have Spriggan and Tekkon Kinkreet under their belt, and did a few of the shorts featured on The Animatrix. They've also done music videos for the likes of Glay, Ayumi Hamasaki, Utada Hikaru, Linkin Park (remember "Breaking the Habit"?) and Kanye, apparently.

SO EXCITED!!

Batman: Gotham Knight - Official Site