80's was the era when OVA's started booming, and since Japan was blooming as an economy, a lot of anime sold really well. Plus, you had very very influential anime and manga like Fist of the Northstar, Dragon Ball, Gundam, Jojo. And, some of the major studios of our time, Ghibli, Madhouse, Sunrise were rising stars during that era.
Edit: Forgot to mention the Devilman manga, which inspired Neon Genesis Evangelion, the most influential anime in recent times, and Berserk, which is a highly respected manga.
And Ashita no Joe, whose protagonist Joe became an icon in Japan.