Leroy Jethro Gibbs
5. Leroy Jethro Gibbs (Mark Harmon), NCIS [Best TV Crime Fighters: Users' Picks] Gibbs remains the steely core at the center of this CBS monster hit. With his icy stare and unwavering thirst for justice, this is not a man you want to see across from you in an interrogation. Hes a man of few words, but our users have spoken loud and clear in favor of Leroy Jethro Gibbs.