The Three Doctors (Doctor Who) the Third Doctor (Jon Pertwee) for help when Omega drains their civilisation's power. The serial opened the tenth anniversary year of the series, and features the first three Doctors all appearing in the same serial. This makes it the first "Doctor Who" story in which an earlier incarnation of the Doctor returns to the show. A superluminal signal is sent to Earth, carrying with it an energy blob that seems intent on capturing the Doctor. The homeworld of the Time Lords is also under siege, their power being drained through a black hole. Trapped themselves, and desperate to send help,
Doctor Who in the parody "The Five(ish) Doctors Reboot", which also starred two other former Doctors, Colin Baker and Sylvester McCoy, and cameo appearances from cast and crew involved in the programme, including showrunner Steven Moffat and Doctors Paul McGann, David Tennant and Matt Smith. The Doctor in his fourth incarnation has been represented on several episodes of "The Simpsons" and Matt Groening's other animated series "Futurama". There have also been many references to "Doctor Who" in popular culture and other science fiction, including "" ("") and "Leverage". In the Channel 4 series "Queer as Folk" (created by later "Doctor Who" executive