Scream 4

Funny, clever, self aware, while reinventing itself with a new, unique twist yet keeps the scream charm.  From 1-4, other than the first one of course, this is the best scream movie.  On a slightly unrelated note, the end credits music for this is awful for this kind of movie.  Doesn’t change the fact that this is great and if you like slashers, watch this (obviously watch the first 3 beforehand).