"I’m open to most genres. I like to play around with genre though…28 Days later was a Zombie Movie with no Zombies in it in my opinion; Slumdog was a Fairy Tale in genre terms but there are moments of real darkness in it; 127 Hours was an Action Movie about a guy who couldn’t move… Trance is supposed to be a heist movie or an amnesia movie, or a femme fatale movie. but it’s all of those things and none of those things really. the genre hooks are macguffins that give us a route into exploring ideas about perception, reality and madness."
Danny Boyle, on Reddit