John Barrowman Concert, Cardiff, 23 May, with David Tennant as an audience member

John Barrowman at the moment is involved in a concert tour, and it just so happened that someone managed to get footage of when David Tennant went to go watch him.

In this video Barrowman points out David Tennant sitting in the balcony wearing a 'Team Barrowman 09' t-shirt, as well as some other antics.