The episodes get a bit repetitive, but it is a kid's show, so that's not necessarily a bad thing. The show's ability to hold my interest was spotty - around the middle of each episode I got bored, but the final round was enough to keep me watching.
I liked this, original, series better than "Where in Time..." but both were well done. A fun way of teaching kids facts about the world around them, without getting preachy or treating them condescendingly.
The Rockapella group was one of the highlights of the show.