Now, to quickly explain, killer, in this instance, is not an adjective that can be used interchangeably with great or cool. In this instance, I mean movies where chicks get killed (usually with a knife, axe, machete or other extremely messy impliment).
This would include and is not limited to the:
Nightmare on Elm Street series
Friday the 13th series
Halloween series
Scream series
I Know What You Did Last Summer series