Apparently, all we've got is just one season, but it's still quite enjoyable and definitely enough to give me an idea of how a play is put together. The characters are quite amusing in their own way (I'm personally partial to Fizz's way of mispronouncing certain words and taking certain things literally).
One little detail I noticed that I thought I'd bring up: there are posters of many Broadway-type plays hung around the greenroom - one of them is for Avenue Q, a strictly adult-oriented show. It's kind of messed up to have that in a series aimed at younger children, isn't it?