There are many references to other media from Duggee's hat in the "The Leaf Badge" resembling Ash Ketchum's hat from the Pokémon cartoon, to Duggee resembling Steve Zizzou in "The Submarine Badge".
Brilliant TV. I put It on for my son so I can watch it. The extra characters with accents are great. The rabbits the ants and the crabs oh and the cockney bird.... I could go on. Ahhhhh woof!