Diebuster

Diebuster, known in Japan as Aim for the Top 2! (トップをねらえ 2!, Toppu o Nerae Tsū!) is a six episode anime Original Video Animation (OVA) series created by Gainax in 2004.

The first episode was aired on October
3, 2004,
while the final episode was released on August
14, 2006.
A movie, officially titled Top o Nerae 2! & Top o Nerae! Gattai Gekijouban retelling/recapping
the end of the first Gunbuster OVA and
the finale of Diebuster. It was scheduled to air on October
1, 2006 at
the Tokyo Anime Center's 3D Akiba theatre.

Also called Gunbuster 2 by some Western fans, it
is the direct sequel to Gunbuster,
but is animated in a 16:9 widescreen aspect
ratio, rather than the 4:3 aspect ratio used in the majority of Gunbuster.
It has been licensed for American release by Bandai
Visual USA as Gunbuster 2. Additionally a manga adaptation
of the series is available in Japan. (http://en.wikipedia.org/wiki/Diebuster)