This is Sandi Simcha DuBowski's documentary about gay and lesbian Orthodox and Chassidic Jews. It's not an easy fate, since the strict interpretation of the Torah condemns homosexuality as an abomination punishable by death. DuBowski weaves together charged interviews with rabbis, therapists, and those torn between their faith and their nature, many shown in silhouette, their identities erased and only their pain intact. With its testimony of anguish and joy, Trembling is a tribute to the human spirit, if not to the institutions that seek to define it. At the Avon.