Gunbuster (anime OVA, 1988-89)

Gunbuster is a 1988-89 anime OVA. It features an epic struggle for survival with space monsters, giant robots, time paradoxes and scantily-clad (sometimes unclad) babes. 

An intelligent, subtle, emotionally resonant complex sci-fi tale. 

It's absolutely superb.

My full review can be found at Cult TV Lounge.