LA STAGE INSIDER
INSIDER spotlights Firehouse, the waiver play that is going global over the Internet while Christine O'Donnell goes non-political LA Women's Theatre Project event.  International City Theatre unveils 2012 season;  a slew of celebrities warble at closing party for Festival of New American Musicals; and INSIDER History recalls another gaggle of celebs that populated the 1940 offering of Noel Coward's 9-p…