I always loved watching the Mario cartoons when I was a kid, but each one had something to annoy me. The first one had the cheesy live-action segments which I never personally cared for at all, and sometimes ran Zelda instead, and at that time I don't think I even knew what Zelda was. The second one had the weirdo names for the Koopa Kids. And of course, the Super Mario World cartoon replaced Toad and his trademark doggie-chew-toy squeak when jumping with the much less amusing Yoshi.
Despite, I still liked them all well enough to watch every day that I could ;)