None.

Among the outstanding international cast is Frederich "Boul" Zipperlen from France, a creative juggler and contortionist.

He emerges in the ring from a gigantic cellophane ball and begins a beguine of dancing, juggling and balancing that dazzles the audience. He contorts his body into graceful knots while crystal balls fly from his fingers into the air. One lands on his head and moves smoothly from forehead to ear, then ear to neck, glides down his arm to the elbow's bend, then up again to a bicep bump.

Boul (his nickname in French means... you guessed it, "ball") specializes in balls. Now he juggles five, and, catching one on his neck he juggles the rest until they come to a soft landing on his back and, like neat little soldiers, march down the length of his spine. He smiles and suddenly three balls move under his leg, merging with two others into a five ball cascade. Next he does a knee catch and a forehead balance, his body drops into the splits and twists artfully into a neck stand with a ball spinning on a finger of each hand.

Contortions now begin in earnest. With one ball held tightly between his feet he vaults into a handstand, his feet dip in a gradual arch to his head. The ball drops to his neck while his body lowers to a resting place, chest on the ground. The crowd is suitably impressed, imagining the hours of work involved in mastering these seemingly effortless maneuvers.

A court jester moves behind him holding a hat. Boul bends backward from the waist and shoots five ping-pong balls, rapid fire, in an arc. They plop safely one after the other into the waiting bowler. It's his favorite trick. (Orrel Lanter, Juggle Magazine)