I'd love to have been at the meeting which resulted in the creation of Underworld. To my mind, it must have run along lines such as these:

MAX STEERSTROFTMEIER: The question is gentlemen, which four-year-old skein of the zeitgeist should we rip off to make our new film; Buffy the Vampire Slayer or The Matrix?
TYLER DAVENPORT: Hey, I've got a crazy idea, couldn't we... do both?
MAX STEERSTROFTMEIER: Brilliant Davenport! That's so crazy it might just work!