* FanNickname: David [[BiggusDickus Ten-Inch]], courtesy of Creator/BilliePiper.
* HilariousInHindsight: In his interview before ''Film/HarryPotterAndTheGobletOfFire'' premiere, he mentions that he will never have a [[{{Series/DoctorWho}} this big of an audience again]].
* MemeticMutation: "Allons-y!" amongst others.
** [[Creator/JohnBarrowman BARROWMAN!]] [[Series/NeverMindTheBuzzcocks *shakes fist*]]