I am such a Terra fanboy. I have to say Terra is my absolute favourite character. I really love how her character is structured, her story, everything, really. I would say so much more but I'm really out of the writing mood..

FFVI itself, I can't say there is something I like the most about it (minus Terra, hehhh). It has so many memorable moments and each character is amazing on there own, storywise or gameplay wise. I think that's another thing that appeals to me, that most of them can hold their own, and there is no specific main character.

EDIT: Holy crap I haven't posted on TFF in *forever*.