Christopher Eugene "Chris" O'Donnell (born June 26, 1970) is an American actor, perhaps best known for playing Robin in the Batman films, Batman Forever and Batman & Robin, Charlie Simms in Scent of a Woman, Finn Dandridge in Grey's Anatomy, and more recently, Jack McAuliffe in The Company. O'Donnell currently plays the role of Callen in the NCIS spin-off, NCIS: Los Angeles, which premiered in September.
O'Donnell, the youngest of seven children (with four sisters and two brothers), was born in Winnetka, Illinois, the son of Julie, a realtor, and William O'Donnell, Sr., a radio manager. O'Donnell is of paternal Irish and maternal German descent; he was raised in a devout Catholic family and attended Catholic schools, including Loyola Academy in Willmette, Illinois for high school, graduating in 1988. O'Donnell attended Boston College and graduated with a Bachelor of Science in marketing.