What movie scene genuinely made your mouth drop?

I was reflecting after my Gattaca thread about other movies that had truly jaw dropping scenes.

I’ve seen a lot of movies but few scenes really get me genuinely speechless or saying holy shit.

When Jerome Morrow puts himself into the incinerator I literally sat there stunned with my mouth open.

Another movie scene that had me widening my eyes was in Schindler’s List, where the Jewish ghetto clearance scene, specifically when they shoot the man strapped under the bed . I hadn’t felt so separate from the reality of the viewing room I was in.

So I thought I’d put it to you redditors to give your answer.