h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

I could add loads more to this entry if you'd like to get it bigger.

Think.....

Thundercats
He-Man
She-Ra
Centurions
Willy Fogg
Dogtan'gan and the 3 Muskehounds

and many more.

And if you're interested the words to the Henry's Cat theme were:

Hen-er-ey, Hen-er-ey, you must know Hen-er-ey's cat.

You must have seen the movie
You must have read the book
He's a mellow yellow feline
So take a second look

He knows everything about nothing
and not too much about that
So if you know someone who knows what he knows
Then you must know Henry's Cat.

Plus, this is all we talk about when we're in the pub so our anorak level is of a fairly high standard. If anyone's got any queries or questions I'm trying to put together an ultimate cartoon trivia quiz for the guide, all contributions welcome.

It's a few years older than your list, but nothing you've listed beats "Rocky and Bullwinkle".