It”s been nearly 20 years since the O.J. Simpson trial. Coincidentally, about the same time that the Raspyni Brothers have been a juggling comedy act. Aha, but that”s not that only common denominator.

Balancing a stack of precisely sized square wooden boxes as tall as his own body, Germantown circus artist Greg Kennedy quips onstage that this is what $100,000 of engineering school buys you. But ...