Joan Girardi is a fictional character from the television series Joan of Arcadia, which aired from 2003 to 2005. She is portrayed by actress Amber Tamblyn and is depicted as a typical teenager who begins to receive visits from God, who appears in various human forms. These encounters lead her to undertake various tasks that challenge her beliefs and help her grow. The show explores themes of faith, morality, and the complexities of adolescence through Joan's experiences. Her character often grapples with the implications of her divine missions while navigating relationships with her family and friends, making her journey relatable to many viewers.