Matthew Fox, best known for his role as Dr. Jack Shephard on the ABC drama Lost, first emerged in the successful teen drama Party of Five. Fox, who studied economics and played football at Columbia University, had originally planned on being a Wall Street broker, before the acting bug bit him. He can also be seen in the sports drama We are Marshall, Vantage Point and in the feature Speed Racer as Speed's rival, the mysterious "Racer X".
More about Matthew Fox and Lost at the official show site.