A guy named gigasoverlord posted all 13 episodes of the Getter Robo Armageddon OVA series on Veoh.com. Having seen all the different Getter OVA serieses, I can say that Armageddon's my favorite.
To sum up the premise of Getter, it dates back to Go Nagai's old '70s anime/manga series, featuring three young men who pilot three seperate jets that combine in three seperate ways to form Getter Robo's three forms. The machine, powered by the strange Getter Radiation, is the physical embodiment of change and evolution and change. Armageddon is in a different continuity, however, and a sequel to the Audio Drama "Getter Robo: Moon Wars", telling mankind's battle against the strange aliens known as the "Invaders".
And "Armageddon" certainly deserves to be in the title, and you'll find out why quickly.
http://www.veoh.com/videos/v1341598PwP3qws...2164&rank=5If I get some feedback, I'll post links to the other eps.