By Austin Pendleton, starring Glenne Headly, Martin Jarvis, Simon Templeman, and Robert Machray. Sir Laurence Olivier. Orson Welles. Vivien Leigh. Joan Plowright. Kenneth Tynan. When these champions of the theatre get together to rehearse Ionesco's Rhinoceros, mere mortals best step aside. With lightning wit and scathing insight into the true nature of genius, Austin Pendleton's new play opens the private worlds of these very public people, exposing their warmth, their egos, and their glittering madness.