Jennifer Marie Morrison is an American actress and director. She is most known for her roles as Dr. Allison Cameron in the medical-drama series House (2004–2012) and Emma Swan in the ABC adventure-fantasy series Once Upon a Time (2011–2018). She has also portrayed Zoey Pierson, one of Ted Mosby's love interests, on the comedy series How I Met Your Mother; Winona Kirk, mother of James T. Kirk in the 2009 science-fiction film Star Trek; and Tess Conlon in the 2011 sports drama film Warrior. She made her feature-film directorial debut with Sun Dogs (2017).