Amanda Peet is an American actress. She began her career with small parts on television before making her feature film debut in Animal Room (1995). Her portrayal of Jill St. Claire in The Whole Nine Yards (2000) brought her wider recognition. Since then, she has appeared in Saving Silverman (2001), High Crimes, Changing Lanes, Igby Goes Down (all 2002), Something's Gotta Give, Identity (both 2003), Melinda and Melinda (2004), A Lot like Love, Syriana (both 2005), The X-Files: I Want to Believe (2008), 2012 (2009), Gulliver's Travels (2010), Identity Thief, The Way, Way Back (both 2013), and other films.
In addition to film, Peet played Jacqueline Barrett on The WB's Jack & Jill (1999–2001), Jordan McDeere on NBC's short-lived Aaron Sorkin series Studio 60 on the Sunset Strip (2006-2007), Tina Morris on HBO's Togetherness (2015–2016), Jules on IFC's Brockmire (2016–2020), Betty Broderick on the second season of Bravo's Dirty John (2020), Beth Gallagher in the Paramount+ adaptation of Fatal Attraction (2023), and Mel Cooper in the Apple TV+ series Your Friends & Neighbors. In 2021, she wrote and co-executive produced The Chair for Netflix.