My first exposure to Macross was in the form of the models. Sometime around '83 they exploded into British toy shops in vast numbers. I had never seen anything like them, having been brought up on a diet of WWII aeroplanes, mostly. Then, just as suddenly, they all dissappeared again and I was left wondering "what the hell was that ...?"
I didn't come across Macross again until '90 when I saw DYRL on laser disc. That was when everything clicked, and I was hooked again.
Luckily, I didn't actually discover Robotech until a couple of years later, through the Palladium RPG. Skimmed the book, once, so I still can't really say I've discovered it.