Most awe inspiring thing you've seen in games?

[Vipershark]

Everything about Shadow of the Colossus

DAMMIT I WAS GOING TO POST THIS
why must we think the same way so often

but um

definitely ocarina of time

The first time turning into adult link.
The first time entering the forest temple and hearing that ambient music.
The first time entering the spirit temple and having the soundtrack blow you away.
The final boss battle.

Everything about the game is an moment.