THE BUZZ: Much-beloved actor Gary Oldman was on Conan last night, and the show’s host brought up an interesting topic: Oldman’s voice work for the Call of Duty series.

Oldman, of course, did the voice work for Russian captain Viktor Reznov in Call of Duty: World at War and Call of Duty: Black Ops. In this clip, he talks about what goes into recording the “battle chatter” for those games.