Movie scenes that scare the crap out of you.

Not necessarily a thread confined to horror movies, this is all about those scenes that get your heart rate up, induce bouts of nail-biting, and otherwise generally make you want to be somewhere else while the scene plays out.

The first scene that comes to mind whenever someone asks me about this sort of thing is from "Aliens," when

Spoiler:

Ripley and Newt are trapped in the Operations room with the two facehuggers. Mostly before the little buggers come out in force but after they make themselves known to their soon-to-be victims, and said victims are hiding under the bed and trying to find a way out of the room.

THAT is how to do suspense the right way.

A runner-up would be the bathtub scene in Ghostbusters II. Even though looking back on it shows the scene to be a little goofy, my 10-year-old mind was unable to grasp the tongue-in-cheek humour of it and was appropriately freaked out.

So let's hear about your favourite (or least favourite, as it were) ZOMG FREAKED OUT scenes in movies, either as a kid or that you've seen recently. Bonus points for unexpected or unlikely scenes in movies you wouldn't normally expect to have them.

Jam it back in, in the dark.

The Event Horizon one is a good one. That movie has a fair amount of freaky scenes in it, but that one is up there in the top 3. Same for the scene

Spoiler:

Where Dr. Weir is in the maintenance ducts with the flickering lights. Sees the same thing, plus it has the added benefit of a sneaking-up-behind scene.

Also, I haven't seen Inland Empire yet, but this almost makes me not want to anymore:

Spoiler:

GODDAMN.

How ya doing, buddy?

Seconded. Also, when

Spoiler:

Henry kills it and all that weird foamy stuff starts pouring out.

Many things about that movie creep me the fuck out. Also, the lady in the radiator.

This thing is sticky, and I don't like it. I don't appreciate it.