Joan Hamburg gets an A-List turnout for her premiere Theatre Club event, including Jill Rappaport and Linda Solomon, the cast of The Little Mermaid, Chazz Palminteri, and a SURPRISE visit from Katie Couric, who popped in on Joan's show to support her friend Jill's new book, "Mazel Tov! Celebrities' Bar and Bat Mitzvah Memories."
