Nowadays, James Corden has made a splash stateside through The Late Late Show with James Corden and Carpool Karaoke, but the actor/television personality first grew prominence in the U.K., and it shouldn’t be a shock to know that he starred in an episode of Doctor Who. Specifically, Corden can be seen in Episodes 11, “The Lodger,” and 12, “Closing Time,” of Season 6, where he played the role of Craig Owens, a man who rented a room to the Doctor and later helped him defeat the Cybermen. In return, the Doctor helped Craig confess his feelings to his friend, Sophie.
During his time on the show, Craig and Doctor Who shared a close and personal friendship. While not quite as known in the U.S. back in 2010, James Corden was quite a big name in Britain on both the telly and on the stage when these episodes aired. So, in that sense, Corden was considered a big guest star for the series.