Doctor Who
Wikisimpsons - The Simpsons Wiki
Doctor Who is along-running British sci-fi show. Matt Groening claims to be a fan of Doctor Who. In the Doctor Who episdoe Planet of the Ood, one of the Ood's programming functions is 'classic comedy', the OO worker says "Ood, you've dropped something", and the Ood replies with "D'oh!"
