Terry O’Quinn
Although Terry O’Quinn is best known for his role on Lost as John Locke, he first played Admiral Thomas Boone on JAG. You might also recognize him as Joe White from Hawaii Five-O or as General Nicholas Alexander on The West Wing. He also appeared as Howard Hargrave in The Blacklist: Redemption.
Jeffrey Dean Morgan
Some of you may know Jeffrey Dean Morgan as CIA technician and weapons officer Wally in JAG. But for most people, they recognize him as John Winchester from the popular TV series Supernatural. He also had a memorable role on Grey’s Anatomy as the heart patient Denny. Recently, he took on the role of Negan on another hit TV show The Walking Dead.