7. Doctor Who The Vampire Slayer (Doctor Who/Buffy)
Because why not? The worlds of two cult icons collide in this upbeat credits mash up which features an array of Doctor Who clips in the style of the iconic Buffy the Vampire Slayer titles. Seriously. You'll be humming the theme tune all day long! Buffy slayed her last vampire back in 2003 but it's fan made creations such as this which are helping to keep the memory of Sarah Michelle Gellar's supernatural shenanigans alive. And thank God they are.