What was a moment in a game's storyline that amazed or impressed you?

For me one was in Myth: The Fallen Lords, during the defense of the passes of Bagrada and Seven Gates. The story sucks you in so much at that point the game almost seems to just become an appendage to the story as opposed to the other way around.

The Andrew Ryan scene in the first bioshock really impressed me.

Now, before all the obvious games get mentioned here, let me bring you a recent example.

Far Cry 3 has, for an open world game, incredibly well done story telling elements. Eg. the first level and the "What is the definition of Insanity" speech and eventual outcome.

I mostly remember plot twists that work really well but those generally spoil games so I'm not sure I should mention them but here's the games:

Beneath A Steel Sky, the end.
Dragon Sphere - the bit about two thirds into the game where you found out you're actually *BLEEP*

Chrono Trigger. From the moment the princess from the present is kidnapped in the past, the game's time travel plotline blew my damn mind when I was young. Also the event relating to Crono when you first face off against Lavos.

Final Fantasy VI. Kefka. Everything about this character and pretty much everything that happens because of him is brilliant, unexpected, mold breaking storytelling.

Xenoblade. The first encounter with the real enemy in the colony 9, the gravitas of that event left me stunned and emotional, and it spurred me on throughout the rest of the game.

Spec Ops - The Line. The ending, and in turn looking back at everything that happened prior in light of said ending. God damn.

Half Life 2 - Episode Two. If you've played it you know exactly what I mean.

The Walking Dead. Would it be cheating to say 'the whole damn thing'?

The ending my girlfriend and I got for Primordia. It was chilling.

Home was also really good, in my opinion.

I'm blanking on more of them. :/

Brothers in Arms: Hell's Highway

The entire three-game story arc is great, but Hell's Highway is absolutely amazing. I don't want to say anything that might potentially be close to a spoiler.
The writers were not afraid to get brutal and depressing. A very fitting style for the setting.

How the storyteller in Bastion narrates what happened to the victims of the cataclysm. Jus tthe way he talks about it.... whoa. Many other parts of the game too, but that one is probably the one that gets me the most.

SPOILERS!

This was one of my first wtf moments in videogames and shows the creativity at work by the devs..... PS:T the alley.
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http://www.youtube.com/watch?v=1vnpZRQ6ToU

http://www.youtube.com/watch?v=PjqZv9u2jo8

Metal Gear Solid
Can't put my finger on it, maybe its that despite being open ended it feels so complete and despite eing high-tech fantasy still somewhat believable and grounded in reality.

Metal Gear Solid 3
Playing as the (future) bad guy and realising that his perspective makes the things he will do later somewhat justified and not bad but maybe extreme.

Planescape: Torment
The moment someone reads something for you. It's just a twist, but the genius thing about it is how simple the setup and the payoff is. The setup is just kind of there, and the payoff is just a line. And oh boy is it effective.

Final Fantasy 6
The moment "it" happens. Because no game has told a story eve rin that way.

Heavy Rain
You know what i mean if you played through it. And you know in a way it was a bit of a cheat, but still the idea is great.

Intros to Fallout and Fallout 2; Kerghan's final speech in Arcanum was extremely strong and to think of it, the whole story of Little Big Adventure had a lot of value, both in what it directly told and in its wonderful more subtle parts; it is a story that both children and adults can equally enjoy.

From what I recently played, nothing left a strong impression story-wise. Maybe the ending of Icewind Dale, because it had caught me entirely off-guard. Still, it only was a mild impression because by then the whole experience had left me very indifferent. In Icewind Dale, to give a very crude comparison as I see it - you take on the role of adventurers who work for the cowboys, to get rid of the Indians. One of the few games where I actually disliked the story.

To the moon.

Probably the only game that ever made me cry. Even though visuals are simple and the story is presented in a very simple way, the story itself is worth it.

One of the best stories ever told. There are even few twists and that kind of twists that can break a man.

Syberia 2 - can't say too much but a character does a very noble deed

Gabriel Knight 2 - opera scene is just beautiful

The Last Express - the entire game, really, but the final act is really something. And the last scene, followed by the credits, are quite bittersweet.

CA: Gravity bone & Thirty Flights of Loving

I loved exploring the massive ruins of Wizardry 6 and piecing together what happened. The vivid writing really brought an otherwise abstract grey game to life. It bothers me that so many RPGs (old and new) neglect the power of text. Fancy graphics and sound are nice and all, but without the virtual dungeon master, I feel like I'm missing out.