The most suspensful/tense scenes in cinema.

The scene where Eric Bana sets off the explosion in Munic during the hotel sequence.

Half of Gravity.

Sitting in the theater wondering when the phantom menace was gonna get good was pretty suspenseful

The opening to Cliffhanger where Stallone's trying to save the woman....and fails.

I honestly did not expect her to fall & was shocked at such a suspenseful opening.

The "toss the coin scene" in No Country for Old Men was pretty intense.

Gangs of New York, at the party - when Bill the Butcher starts throwing knives at Jenny, and you wonder - does he still like her and is he just wowing the crowd? or does he want her to feel scared? & so on, basically that whole scene.

The first time I saw final destination

Any scene in which Chigurh interacts with another person in NCFOM is damn near frightening.

There are sooo many, even from one movie.

- First to come to mind, a scene from "Goodfellas," where Billy Batts is gettin' his with Donovan's "Atlantis" playing in the background...

"Way down below the ocean where I wanna be, she may be..."

Also:

- Many from "Paranormal Activity." For example...

- The Girl With the Dragon Tattoo ... first getting it from her counselor, then getting even.

- Chestburster!

Sooo many...