OK, the PR tells us that "an international cast of more than 30 artists costumed as holiday ornaments come to life and perform astonishing feats of disbelief," but we know that the feats they perform more accurately inspire disbelief in others. Still, these feats are indeed astonishing, as a panoply of traditional wintertide revels are brought to brightly staged life by some of the best, high-flyingest acrobats in the world. Nov. 20-25. Tue., 8pm; Wed., 2 & 7:30pm; Fri.-Sat., 2 & 7:30pm; Sun., 2pm. $29-59.