I'm sure any gamer has had a point in their history of button-pushing where they were simply astounded by something in a game be it plot, graphics, gameplay or whatever. Here's a thread for a collection of memories that took gamers' breath away!
I don't mean something you thought was really cool, because those moments are a dime a dozen. I mean those moments where you really feel, "Wow, all of gaming has led up to this moment."
I'll start with one.
Resident Evil 2 overall. You either hate or love the series but few fonder memories linger as clearly as RE2. At the time the CG cut-scenes were drop-dead jaw-dropping, the textures were amazing on the PS, the storyline was really interesting (and has unfortunately gone down the toilet since) the two-sided story was an AWESOME concept that I have yet to see implemented again successfully and the monsters. Who can forget the one-shot kill croc, the first encounter with 'Baby' or Birkin's seemingly endless and badass forms not to mention the amazing encounters with 'Mr. X'.
I think RE2 is most impressive because all of that came on the heels of RE1 which in comparison offered so very little. It was like jumping from NES Mario Bros to Mario 64. A truly amazing sequel that has only been justifiably met with competition from the recent 4. An amazing experience all-around and one of the best sequels I can think of.