Amy Aquino, who plays Claire, also played Marianne Grandy in an episode of Grey's Anatomy. Timothy Bottoms, who plays Irwin, also played Carl Murphy in an episode of Grey's Anatomy. Larry Clarke, who plays George Walters, also played Paul in an episode of Grey's Anatomy. Sara Hagan, who plays Kim Walters/Lainie, also played Devo Friedman in an episode of Grey's Anatomy. David Grant Wright, who plays Troy, also played Mr Burton in an episode of Grey's Anatomy.