Joanna comes from a show business family and is the daughter of game show host Monty Hall and Marilyn (Plotell) Hall, her mother was a writer-producer and Emmy-award winner. She has two siblings, Sharon, a television writer and Richard Hall, Richard Hall, an Emmy Award winning television producer.
She was married to acting teacher Paul G. Gleason (not the late actor Paul Gleason of "The Breakfast Club" fame) from 1975 to 1981, they have one son, Aaron Gleason. She was married to investment banker Michael Bennahum from 1984 to 1990. She married actor Chris Sarandon in
… More 1994, becoming the step mother of his two daughters and one son; Stephanie, Alexis and Michael.
Joanna won a Tony Award in 1988 for Best Actress in a Musical for her role in Stephen Sondheim-James Lapine's "Into The Woods." 
