Judd Hirsch, Tonya Pinkins, Dana Ivey and Parker Posey are among the many actors lending their talents to short works (including pieces by Alfred Uhry, Jeanine Tesori and Bathsheba Doran) in Playwrights Horizons’ popular fund-raising promenade through potential playing spaces in its building. (The more expensive tickets include a 6pm dinner at Chez Josephine next door.)