S1, E1: Aimed at the toddler and pre-school set, "Caillou" is an educational show that stars the 4-year-old title character (pronounced KY-YOO), who lives with his mother, father and sister in a blue house on Pine Street. Caillou has invisible friends, learns how to play sports and explores nature. Friendly and curious, Caillou discovers as much fun and wonder as any kid can imagine. In addition to the animated segments featuring Caillou's adventures, the show also features puppet skits and videos of children in real-life situations.