Eddie Cahill is an American actor best known for his starring role as Detective Don Flack on the police procedural crime drama television series CSI: NY, from 2004-2014.
He is also familiar to television audiences for his role as Rachel's boyfriend Tag Jones in Friends.
He starred in the television series Glory Days and had guest-starring roles in Sex and the City, Dawson's Creek, Haunted, Law & Order: Special Victims Unit, Charmed and Felicity.
Cahill made his feature film debut in 2004 in Miracle, in which he played Jim Craig, goalkeeper for the 1980 US Olympic hockey team and one of the actor's real-life heroes. He has also appeared in the films Lords of Dogtown (2005), This is Not a Test (2008) and The Narrows (2008).
In 2000, Cahill appeared in the Off Broadway production of The Altruists.
Cahill was born and raised in New York and now divides his time between New York and Los Angeles.