I remember Catch That Pigeon and Wacky Races with Penelope Pitstop. We also had Casper, Simba (a female lion), and Marine Boy. He had some kind of magic gum that let him breathe under water. And a boomerang strapped to his arm.
But Gigantor was my favorite when it was on. Just two levers on his controller, and he could do everything. Well, 'space-age' explains that I guess.
There was a Gigantor movie, probably around 10 or 15 years ago. Didn't see it, but I had to give it an honorable mention.
I was never into The Smurfs. By then, cartoons had changed from the old style into something... different. I prefer the Road Runner, Pink Panther, Tom and Jerry, anything with Mel Blanc, and the whole Loony Tunes style.
Those newfangled cartoons just did not amuse me. Back in my day, cartoons were funny! :-)