-that battle with Jenova*Life, with Aeris' theme going on and the blue light all around was gorgeous
-when Cloud disappears and everyone on the Highwind is talking about him, and when he comes back on the Highwind
-the Golden Saucer dates and discovering Cait Sith was a spy
-the Weapon attack on Junon (the whole escaping from the execution - Yuffie as a reporter) thing

but the grandest, most glorious moments :
- when you step out of Midgar for the first time. this was my first FF and I thought all the game would be set in Midgar. Then they chucked me out on this huge world map and my world probably warped. O_o
- when you buy that Costa del Sol villa