I've seen it, and I like it a lot. I especially like the concept behind Kaleido Stage; you know, the way they combine acrobatics with ballet. It's cool, and there's definately plot and great character development.
The Fool is hilarious, and I like Jonathon the seal. :P
The first seaon was fabulous, and the second season "New Wings" looks to be at the same level. But I don't like Leon. He's mean.