My mother and I brought my two nephews to watch Argentinian puppet company Kukla's Circo Fokus Bokus and both boys loved it, especially the blacklight theatre segments.
"It was better than I thought because I couldn't see the actors," said the older boy who's 7. He spent most of the show saying "Wow!" and "But that's impossible" as contortionists, jugglers and acrobats magically (and comically) came to life before us in the hands of the five performers. I had explained the black light theatre concept to him - puppeteers dressed completely in black are invisible under ultraviolet light; only their puppets can seen because of psychedelic glow-in-the-dark paint - but, as a kid, he kept forgetting and being wowed again with each new scene. The younger boy, 3, was less articulate but I think his squeals of joy, clapping and dancing in his seat said it all.
I had been warned by friends that the novelty quickly wears out for the adults but Circo is only an hour long so the show ends before it truly overstays its welcome for us older folks. My mum said she enjoyed herself as well and even a jaded theatre critic like myself must say that quite a few of the segments took me by surprise.
(I could have done without the rather messy and pointless clowning sequence that opens the show before we enter the blacklit world of the circus though.)
Best of all, it's the type of children's show where all the little tykes are laughing, clapping, oohing, asking questions and calling out to the actors (there's very little actual spoken text) so you don't need to worry too much about keeping your little ones under control. Everyone gets to relax and just enjoy themselves!