Aside from some minor tweeks for the american audience, from what I've seen of Macross and Robotech's first season there wasn't that much difference. Max Jenius became Max Sterling. Hikaru became Rick Hunter. Lynn Minmei is still Lyn Minmei. Some scenes were cut, like the shower scene when Hikaru and Lynn are trapped in the ship's hold for 2 weeks. But overall there wasn't a huge difference that I could tell. Just some minor revisions to allow Macross, Super Dimensional Cavalry Southern Cross, and Genesis Climber Mospeada to be woven together into one story involving transforming vehicles, aliens and protoculture.

So now I'm gonna have to do the seen it/haven't seen it list:

The Guyver
Battle Angel Alita
Original Dirty Pair
Vampire Hunter D
Bubblegum Crisis
Bubblegum Crisis: Tokyo 2040
Arcadia Of My Youth
Dominion:Tank Police
Golden Boy
Dirty Pair Flash
Sorcerer Hunters
Cutey Honey
Maps
Devil Hunter Yohko
Interstella 5555: The 5tory of the 5ecret 5tar
5ystem
Hayao Miyazaki Films
Nausicca In The Valley Of The Wind
Warriors of the Wind (unauthorized dub and
edit of Nausicca)
Spirited Away
Whisper of the Heart
The Cat Returns
Princess Monoke
Howl's Moving Castle
Otaku No Video
Royal Space Force: The Wings of Honneamise
Darkside Blues
Dead Leaves
Ushio&Tora
Spriggan
Blood: The Last Vampire
Gravion
Gravion Zwei
Burn-Up
Burn-Up: Warrior
Burn-Up: Scamble
All Purpose Cultrual Cat Girl Nuku Nuku
DragonHalf
GunSmith Cats
Metal Skin Panic: Madox-01
Neon Genesis Evangelion
Go Nagai's The Devil Lady
Iria: Zeiram The Animation

Ok, that's about it for my DVD collection, the VHS tapes are currently buried, but I know I've got Record of the Lodoss War in there.