Yeah - That's why I said anything but My favorites were H.R. Pufnstuf and Land of the Lost

Captain Future
Bugs Bunny
Tom &Jerry

There were a lot of cartoon-series, that I remember fondly:

- Die Biene Maja (Maya the Bee) http://en.wikipedia.org/wiki/Maya_the_Bee_%28anime%29
- Grisu, der kleine Drache (engl.:???) http://www.imdb.com/title/tt0313060/
- Es war einmal... (Once upon a time...) http://www.hellomaestro.fr/series.html
- Heidi (Heidi - Girl of the Alps?) http://www.imdb.com/title/tt0070968/
- Dr. Snuggles (engl.:???) http://www.imdb.com/title/tt0081854/
- Calimero (Calimero?) http://www.calimero.com/
- Herr Rossi sucht das Glück (The fantastic Adventures of Mr. Rossi) http://www.imdb.com/title/tt0203908/
- Captain Future (The Adventures of Captain Future) http://www.imdb.com/title/tt0122336/
- Tom und Jerry (Tom and Jerry) http://en.wikipedia.org/wiki/Tom_and_Jerry
- Der rosarote Panther (The Pink Panther Show) http://www.imdb.com/title/tt0063939/
- Danger Mouse (Danger Mouse) http://www.imdb.com/title/tt0081848/
- Familie Feuerstein (The Flintstones) http://www.imdb.com/title/tt0053502/
- Barbapapa (Barbapapa?) http://www.barbapapa.fr/

Edit: Typo (Catoon != Cartoon) ;)

Ulysses 31
Dogtanian and the Three Muskehounds
The Mysterious Cities of Gold
M.A.S.K.
Dungeons and Dragons
Thundercats
The Raccoons
Jayce and The wheeled Warriors

Ed, Edd, n' Eddy
Courage The Cowardly Dog
Billy & Mandy

Roadrunner vs Wiley E. Coyote - I was always rooting for Coyote, I hated that damn roadrunner.
Bugs Bunny
Daffy Duck
Loony Toons
D&D
GI Joe
Scooby Doo
Tom and Jerry

as a Young Adult:
Beavis and Butthead
Ren and Stimpy

Dr Snuggles was just 'Dr Snuggles' in english too - I think I really liked it but I tend to confuse it with Jamie and his Magic Torch, Chorlton and the Wheelies was good too, but that was stop motion rather than 2d animation...

Dragon Ball.

I guess I have to mention Gnomes, I loved this one.
This is an animated film about a bunch of gnomes living in the forest who needs to be careful not to be eaten by the trolls =)

Here's a couple of obscure ones:

Mr Rossi, Sport Billy, The Harlem Globetrotters!

*edit*
OMG the theme to Mr Rossi is actually amazing!

http://www.youtube.com/watch?v=fw26fLW_gg4

That was one cartoon that terrified me (though only one episode, I think xD). But I still watched it :D

Otherwise, the usual, Tom & Jerry, Scooby Doo, Samurai Jack were among the favorites, I guess.
Also watched Dexter's Laboratory and Powerpuff Girls. Ed, Edd & Eddy, anyone? :D

And I'm intentionally not including any anime in there.

Ah damn, how could I forget the Looney Toons and Popeye?!!?

Battle of the planets.

The Centurions and Thundercats bring back some fond memories.

I never had a single favorite so hope you're good with a list. XD

Beast Wars (Transformers)
Darkwing Duck
DCAU (Batman TAS, Superman TAS, Justice League)
Dexter's Labratory
Dragonball Z
Duck Tales
Pokemon
Rocko's Modern Life
Samurai Jack
Scooby-Doo (Where Are You?, Movies, etc)
Spider-Man (The 90s series and SM and His Amazing Friends)
The Charlie Brown and Snoopy Show
The Flintstones
X-Men (The 90s cartoon)

Oh! I forgot that one, but I hated that robot -- 7-Zark-7 I think it was called.

EDIT: and yes, I know the robot was just a vile addition to the Japanese original.