I just recently download the Vampire Princess Miyu OVA. I've also been contemplating re-buying Phantom Quest Corp and the Nuku Nuku OVA collection off of Amazon.

If I bought them "used" it would be pretty damn cheap.

Armitage III. I remember watching this multiple times as a wee lad when it came out on t.v. My brother and I would always be down for watching it, no matter how many times it came on.

I don't think I have the guts to watch it now, though. It might suck, and that would ruin my good memories.

I also watched Dragon Half recently and enjoyed it OP.

I have always been a fan of the classic Space Pirate Captain Harlock, which I suppose counts as old, and I have recently started watching Gokinjo Monogatari which is cute and funny.

Going through Maison Ikkoku now which is great and rewatching Patlabor.

Karekano (even thought they early and abruptly ended it)... old days Hideaki Anno could turn even a light comedy romance into a monologue, static-frame fisheye mindfuck wich is a very good thing.