No i haven't played FF VI yet, i mean i have the game and started it a few times but never got around to really start playing it. Let's call it just a "sampling".
I did play FF IV for a while and don't know if i got very far (a bit further than the big "event" with the twins, but the game throws so many random encounters at you in every dungeon or overworld that i just couldn't get me to play it anymore.
@ hell_snake sounds great, i haven't heard of this series before, but i'll track it down once i found a bit more info on it.
P.S. I updated my list of RPG's (mainly PS2) in my first post.