Caillou spends his summer doing many new things ... On a really hot day, he and Rosie run through the sprinkler, then watch real kids run through the sprinkler and play in the pool.

Caillou's little sister Rosie also gets in on the Christmas fun. When Mom offers to help Rosie with making gifts, Rosie decides to try it on her own.

This kid loves to complain. (SOUNDBITE OF TV SHOW, "CAILLOU") BOVAIRD: (As Caillou) Let - mommy. Ugh, you broke my room. Go away, Rosie. Go out of my room. Ah, grandma (crying). MOSLEY ...

Caillou brings a cricket in the house and learns creatures belong in their natural habitat./Caillou learns a lesson about jealousy when Sarah gets a new dog./Caillou learns the difference between ...

The show first aired in 1997 on Teletoon, and new episodes were released until 2010, after which Caillou reruns ruled the popular-kids station — until recently. The perennial 4-year-old clearly ...