My Saturdays were great - I'd get up at 6 am with a bowl of Cheerios or Kix (my mom never let me have the sugary stuff :/) and watch Looney Tunes. After that it was Muppet Babies, Pee Wee's Playhouse, etc. and around 11 am or noon I'd go over to a friend's house and watch Saved By The Bell ;D
It makes me sad that kids these days are stuck with imports from other countries (don't get me wrong, I do love anime, but it shouldn't take over Saturday cartoon lineups!) or reruns from another channel (Discovery Kids, anyone?), or corny live-action tween shows. NOTHING is made exclusively for Saturdays anymore.