[Glorfindel]

Nah... Freddy Krueger are not so scary IMO...
Murderer in Horror Movies who talks are always less scary then thoose who not talk (Jason and Michael Myers)

But most scary of all is Sadako from the japanese movie "Ringu" (the movie that the american movie "The Ring" is based on).

I've seen hundreds of horrormovies, but Sadako beats the crap of all other murderers... and she's a little girl! (maybe that's why she is so scary)