Chrono Trigger. Hot diggity damn! Best SNES RPG ever!
Probably my favorite (J)RPG of all time, and the one game that actually got me interested in the genre (when up to that point I didn't give a damn about RPGs). Sadly, most of my experiences with the genre have been below that high point (FF7 included. Yes, I did play through the whole thing.).
Quake II on the PC was a close second. That game was absolute badassery from start to finish. Doom may be the father of the 3D FPS, but the formula was perfected with Quake II, and unless I'm mistaken the very first CTF and Domination multiplayer games started out as Quake II mods.