Courage the Cowardly Dog XD But I loved most of Cartoon Network, Toonami, and Fox Kids (which then turned into Jetix) And then when I was REEEEALLY teeny-weeny, it was Princess Gwenevere and The Jewel Riders

Let's see:

In English: Thundercats, Captain Planet, The Herb garden, Ulysses 31

In Spanish: Dragonball, Dragonball Z, Captain Tsubasa (also known as Oliver y Benji), Rurouni Kenshin.

INVADER ZIM.

Otherwise anything that was on Cartoon Network.

Either My Little Pony or Swat Kats. I used to adore both

To pick one is practically impossible but would be either Sonic the hedgehog or Teenage mutant ninja Turtles
I did also love Animals of Farthing wood(a real eye opener)
but others include:
Inspector gadget and Gadget Boy I loved the link between them both,
Pokemon,
Kim possible,
Sabrina the teenage witch both cartoon and actor versions
Dennis the menace,
Anything that was Loony toons based, Taz, bugs, Road runner ect,
Woody woodpecker,
The raccoons,
Sharky + George,
Spongebob,
Also included is at least 50% of the ones already metioned lol
the list is endless I'd take up the forum just listing my faves
God that make me feel old. lol.
I can't help being a big Kid

Oh and who could forget Smurfs lol

Aeon Flux is the best cartoon ever. Love it, used to watch it alot when i was ickle ^^

Transformers
Teenage Mutant Hero Turtles
X-Men (90's)
Mighty Max

Too many to chose from for me, but most fave ones were:
G-Force - Gaurdians of Space
Rurouni kenshin
Gargoyles (what a classic, i miss the good old days of the Disney channel)
Escaflowne when it used to come on Fox Kids
The real adventures of Jonny Quest and Sailor Moon.

Far too many to choose from as I watched and loved so many . . . if I was forced it'd have to be either X Men, Dogtanion or Teenage Mutant Hero Turtles.

I'd forgotten about Gargoyles! That was great! Disney channel FTW!