The following video remix of Buffy the Vampire Slayer meets Twilight is interesting, not only for the editing and humor, but also because as a mash-up, it's compare and contrast as social commentary. It really points out the creepy nature of Edward's advances that Twilight fans tend to handwave away, and in the process, does more to comment on the misogynist nature nature of the horror genre than Buffy the TV series seemed to.

And oh yeah, it's pretty funny as well.