I listen to a lot of podcasts. In fact I've had to cut back. Most of what I listen to would either be of no interest or inappropriate for the the Little Guy, although the time an interview with the entire Mythbuster crew came on in the car I was treated to a "Yes!" punctuated by a small fist appearing in the rear view mirror.
Squonk the Dragon was a story on Escape Pod way back in 2006, and it's spawned a series of stories that have since migrated to Podcastle. Both the podcasts clearly cater primarily to grownups, but the humor and whimsie of Squonk and the long-suffering Wendel the Wizard earned the stories a place. I recently grabbed the four stories to create a playlist for LG. Big hit.
Here are the direct links.