As a kid of the 80s, there are just far too many to list. Lots of nostalgia & toy-related cartoon tie-ins dominated the era, and most of them aren't as good as you remember.
I guess the real question is....... what cartoons of the past are you willing to watch today, or collect on bluray, that stand the test of time & appeal to all generations for there humor, iconic characters & impressive animation?
The answer is pretty clear to me & it's not even up for debate......ALL THE CLASSIC MERRY MELODIES/LOONEY TUNES/TEX AVERY CARTOONS. You could have an endless debate just trying to create a Top 50 list of these cartoons alone. The Golden Age of Animation. Thank god WB continues to persevere & restore them for collectors today.
After that there's the other iconic classics that just never get old....
1) MGM Tom & Jerry cartoons (and especially those really strange Gene Deitch early 60s cartoons from Czechoslovakia!)
2) The first 25 episodes of Scooby Doo Where Are You? (even the New Scooby-Doo Movies with special guest stars)
3) Johnny Quest (the finest animation work Hanna Barbera ever produced)
4) The Max Fleischer 1940 Superman Cartoons (The most expensive, beautifully animated shorts ever made)
5) The original 1967 Spider-Man cartoons (with it's iconic theme song)
Honorable mention to the first 10 season of the Simpsons, Beavis & Butthead, the Flintstones, Superfriends vs The Legion of Doom, and Thundar the Barbarian. There's just so much great animation out there.