Remember the last show you saw that got a standing ovation? Now try to think of one that had the audience on its feet at intermission. They stepped, strutted, stomped, romped, ran rung, hung, flung, flew, threw and played their way through 16 numbers (17 if you count the percussion encore in the lobby that stopped the departing crowd in its collective tracks). It was Blast! and it was fantastic. That said, the show is a cacophony of color and creativity a musical montage offering nearly two hours of stimuli.