Mark Harmon

Bonnie Bartlett on starring in The Deliberate Stranger with Mark Harmon

William Daniels on Mark Harmon as "Dr. Robert Caldwell" on St. Elsewhere

Diamond Farnsworth on doubling Mark Harmon on NCIS

Diamond Farnsworth on performing stunts with Mark Harmon's son Sean on NCIS

Tom Fontana on Mark Harmon as "Dr. Robert Caldwell" on St. Elsewhere 

Allison Janney on specific episodes of The West Wing: "Posse Comitatus" and episodes where "C.J." has a stalker

Charles Floyd Johnson on Mark Harmon as "Leroy Jethro Gibbs" and how Harmon works with the cast on NCIS

Charles Floyd Johnson on the relationship between "Gibbs" and "Sloane" on NCIS

Charles Floyd Johnson on how long NCIS might run for and whether or not the show could go on without Mark Harmon

David McCallum on Mark Harmon's departure from NCIS and the relationship between "Gibbs" and "Ducky"