Caillou was my childhood. And even though it was part of my childhood, in season 1, Caillou was a jerky little brat who always cries and whines over things that aren't that bad as they seem, especially when he threw that pointless tantrum when his dad tells him that the circus was tommorow and not today. I cringed so badly when I saw him pinching his newborn sister to death. I just couldn't believe he did that! I like the new seasons better than that.
P.S.: I like Clementine and Sarah, and Leo was okay at least.