Cowboy Up stars the actor best known for which role on the series "24"?
Cowboy Up:  It stars Kiefer Sutherland, Marcus Thomas, Molly Ringwald, and Daryl Hannah. Kiefer Sutherland:  He is best known for his portrayal of Jack Bauer on the Fox drama series "24" (2001–2010, 2014), for which he earned an Emmy Award, a Golden Globe Award, two Screen Actors Guild Awards and two Satellite Awards.
Jack Bauer