Well, I was playing RE2 for PC a couple years ago, using the "backwards mode," and I round this corner, and STALL THE MOTHERFUCKING BALL!!! GIANORMASPIDER RIGHT THERE! My voice probably did a four octave jump. It was friggin awesome. Scared the pants off of me, and that's just what the fuck playing a horror game is all about, right?!?!
And then there was when I was 10 years old, playing Duke Nukem 3D on the Family Computer... Mmmmmm... Red Light District... Yeah... I got grounded SO hard for that.
But probably my most WOAH THIS IS SO AWESOME moment in gaming... Actually GETTING Super Tails in Sonic 3/And Knuckles. That shit was SO hard, but SO worth it! You have to get ALL the Chaos Emeralds, and ALL the SUPER Emeralds, just so he can go SUPER. By THAT time, Sonic AND Knuckles are both HYPER. Granted, Hyper Sonic kicks MAJOR ASS.