The problem with mine is that I love virtually all the scenes from these films, making it hard to pick just one scene from each. Equally difficult, as others have said, is to pick just five films, but these are some scenes which move me emotionally.
Scent Of A Woman - Colonel Slade’s speech before the Baird student body and disciplinary committee determining Charlie’s fate. I knew there was something about this scene, but the genuine message about being a person of character took several viewings for me to truly appreciate. Really, any scene by Pacino in this film works. It is my favorite performance by any actor, in any film, ever. The tango scene is obviously also a nominee. Pacino is the movie.
Aliens - So many great, tightly executed and technically incredible scenes to choose from here, but I’ll go with Ripley and Newt emerging onto the landing platform of the atmosphere processor only to discover Bishop is not there while the entire complex is becoming the depths of hell. The Queen emerges from the dark shadows of the elevator as Ripley, now essentially Newt’s surrogate mother, tells Newt to close her eyes. Much excitement ensues, with some of the best traditionally produced scenes (by that I mean non-CGI) ever put to film.
Big Fish - Ed Bloom’s son Will, a reluctant pragmatist who resents his father’s outlandish autobiographical tales, creates his own outlandish tale at his father’s side as he lays on his death bed, incorporating all of the characters from his father’s life in a wild romp of fantasy, imagination and heart.
The Iron Giant - The titular character discovering (upon falling off a cliff while fleeing from an unprovoked attack by a paranoid Cold War era U.S. military) that he can fly, just like Superman could in the comics he’d read. This scene always makes me cry, as does the final scene where he stops a nuclear missile in orbit at the apex of its launch trajectory … just like Superman would have done.
The Wrath of Khan - The battle in the Mutara Nebula, all the way through to Kirk’s speech at Spock’s ceremony. The most recent film, Nemesis, also paralleled this, wherein Data’s endeavor to become human comes full circle in his personal sacrifice for for the greater good. This also happens in Terminator 2 to an extent, and even though Ahnult was programmed to protect, the message at the end of an artificial being learning the value of life is essentially the same.
Clearly, I have some kind of thing for non-human characters achieving their endeavor to become human by personally sacrificing themselves. I suppose Bishop counts too, right? 