He's perhaps best known for his portrayal of Petyr "Littlefinger" Baelish on “Game of Thrones” but I first took note of the uniquely talented Aidan Gillen as Mayor Carcetti on “The Wire.” Now he stars in the period UFO drama “Project Blue Book,” which premieres January 8th on History. In this half hour he talks about his intuition-based approach to preparation, how Jez Butterworth introduced him to the work of John Cassavetes, and I toss a name at him to spark some memories from “The Wire.”