The Fourth Wall was a show with a special shine. Though dealing in very heavy material, actors Peter Thomasson, Angie Radosh, Patti Gardener, and Gregg Weiner honed in on the wittiest, craziest, and funniest lines and moods in A.R. Gurney's script and made them dance. The show could easily have been done at half the speed, or half the intensity, of PBD's production, and come off like an especially bizarre series of events in anybody's living room. But the weird glint in Angie Radosh's eye when she began singing along to a player-piano, the verve of Gregg Weiner's many windy proclamations, the nutso fear and determination in Patti Gardener's every posture, and the helpless hand-wringing of Peter Thomasson bespoke a strange, shared energy — everything they did was gonzo in just the right way, as though they'd each imported their personas from the same semi-sane alternate universe. Let's hope some smart director reunites these guys soon.