The two creepiest parts of the Texas Chainsaw Massacre were...

1.) When Jessica Biel's character was being chased around by the chainsaw-wielding psychopath and ended up inside the trailer of that perky fat lady and the crazy looking Sinead O'Connor lookalike. They told her that they didn't have a phone, then drugged her tea -- and the phone rang minutes later. And she had nowhere to run.

and

2.) The scene where the chainsaw-wielding psychopath just finished murdering one of the supporting characters, then turned around to look at Jessica Biel's character and he was wearing her boyfriend Kemper's face.

God, so hard. But I have to say my list is pretty much the same as everyone elses.

Halloween 2 (I so agree with ya Drew)

Friday The 13th (original)

The Shining

The Exorcist

Black Christmas (holy crap)

Texas Chainshaw Massacre

Halloween

Nightmare on Elm Street

It (another holy crap)

#1 -> Psycho

Unless I missed 'em, I'm surprise no one listed It or the Chucky movies...

Burnt Offerings is another scary movie. Wierd..but creepy and thrilling. I also really love Audrey Rose.