Arnold Schwarzenegger

Arnold Schwarzenegger was an athletic actor (PROSE: Bullet Time) with a fat neck. (PROSE: The Art of Destruction) In Terminator II, his character had a skeleton made of metal (PROSE: The Algebra of Ice) and was known for saying he would "be back". (PROSE: The Clockwise Man)

A gendarme in Paris saw Dorothée's time bike and asked "Où est Monsieur Schwarzenegger?" (PROSE: Lungbarrow)

The Sixth Doctor said that "Brother Schwarzenegger" could reduce the monastery of the Brotherhood of the Black Petal to a hole in the ground. (AUDIO: Order of the Daleks)

On What Not to Wear in 200,100, Trine-E identified Jack Harkness's "buccaneer look" as a "little dash of pirate and just a tweak of President Schwarzenegger. (TV: Bad Wolf)

Behind the scenes
Arnold Schwarzenegger was Governor of California from 2003 to 2011. The 2005 episode Bad Wolf implied that he later became President of the United States.