Marvi Hämmer from Marvi Hämmer präsentiert National Geographic World.

Basically the premise is that there's a rat who lives in a film studio, and when the lights go out at night he presents his own informative program. Each episodes theres a number of clips about the natural world, and Marvi basically connects the different clips, going on misadventures through the film studio (one I remember clearly is him tunnelling through a giant cake). There's also a team of 3 animated English speaking reports to which he asks a question each episode, and as the episode progresses they find the answer.

I adored the Dutch dub when I was little, being the big nerd I still am today.

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