I liked A few
I like the ending of The Baby (1973), I won't posted cause it as twist
Donnie Darko ending
http://www.myvideo.de/watch/2927959/...e_Darko_Ending
Cruel Intentions (1999) Awesome ending
http://www.youtube.com/watch?v=9zGQxxN_2x0
The Orphanage (2007) I love the ending very creepy and very chilling
Black Christmas (1974) I love it showed the whole house, it some movie end I very creepy.
http://www.youtube.com/watch?v=3TU1XYC8tIY
These are the only one I can think of a the moment