I've seen Kaleido Star about 3 times now, with a friend too! It is a simply enchanting show! I think the characters' design was well made, and the stunts were breathtaking! Not to mention that it isn't just a show about magical girls (although Fool brings that little drop of magic this story wouldn't be complete without), it focuses on the characters' emotions, how they evolve and interact with each other.
I recommend this show to anyone who likes anime about circus, friendship, determination and beautiful art! It kept me on the edge of my seat, especially during the Mystical Act and the Angel's Act! :animesmil