070308katie.jpgThe addition of Katie Holmes to the cast of the upcoming production of All My Sons has done zilch to boost advance ticket sales, according to the Post. "I bought 1,000 tickets to the show," says one broker. "I still have them." Another wonders, "Where are all the Scientologists? Don't they want to see her?" Sure they do, but who has money left for theater after all those expensive classes on the way to OT VIII? The Post also has it that the cast has been forced to sign confidentiality agreements to keep them from blabbing about Holmes’s behavior to evil SPs.