John Prosky
First he was JAG‘s Jon Barrow, but now many fans can’t stop associating John Prosky with his character, David Finch, from HBO’s True Blood. Of course, if you’re a fan of Medium you recognize him as Tom Van Dyke. Recently, he starred as Senator Gibson on Scandal. In Straight Outta Compton, he was Doctor A. Friedman. His father is the late actor, Robert Prosky.
John Prosky
Mark Costello
Since his role as Commander Onclay, Costello has continued acting like most of his other former costars. Mark Costello, famous actor, not to be confused with the author of the same name. Anyway, he had a recurring role on General Hospital. Additionally, Mark Costello had guest roles in The West Wing, Criminal Minds and Everybody Hates Chris. Before JAG, he got roles on hit shows like, L.A. Law, Who’s the Boss?, and Full House.
Mark Costello
