There's definitely a lot for me, probably too many to list, though I guess I'll just pick a couple for each catagory.
JRPG - my first real one was FFVI, obviously I was blown away by it. Chrono Trigger and FFX may have given me about the same impact.
MMO - EQ is my first. I'll make fun of it with my friends now about how much of a waste of time it was, but the reality is, it was my first MMO experience. The first time stepping into a massive world filled with players everywhere was really something...
Ocarina of Time really got to me as well. The story, setting, graphics and everything just blew me away. I recall being amazed at something as silly as the passing of day/night in that game, hah.
I think that's it. Many of my favorite games of all time didn't quite blow me away (mainly Blizzard/PC games), they sorta... I dunno, eased into their place of awesomeness. I know I thought WCII's opening cinematic was awesome, but I can't imagine me having been blown away by an RTS in general (can't remember). I think I'm too hyped for many games to surprise me that much, anyway.
