Yoda

While on Skaro in the 27th century, Bernice Summerfield described the Seventh Doctor as "the worst Yoda ever". (AUDIO: The Lights of Skaro) The Eleventh Doctor once compared himself to "the little green one from Star Wars" and proceeded to play with an imaginary lightsaber. (HOMEVID: Meanwhile in the TARDIS)

Behind the scenes

 * Although Flip claimed she was unsure of the movie she quoted to the Sixth Doctor in Cry of the Vultriss, it is a famous quote by Yoda from Star Wars: The Empire Strikes Back, "Do. Or do not. There is no try."