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 of 2009.
O'Donnell, the youngest of seven children (with four sisters and two brothers), was born in Winnetka, Illinois, the son of Julie 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.
O'Donnell began modeling at the age of thirteen and was featured in several commercials.