All o' y'all saying FF XII or FF IX were your first FF game... makes me feel old. I still remember playing the original FF on my NES, FF IV and VI being FF II and FF III.
FF: Good game, favorite party was probably Fighter, Red Mage, White Mage, Black Mage.
FF II, III, V: Got as part of a FF anthology/collection, but I don't really remember enough about them.
FF IV: Loved it.
FF VI: Also loved it. My favorite characters were Edgar, then Sabin, then probably Cyan and Terra.
FF VII: I wasn't a huge fan of the direction they took starting with FF VII, where it didn't matter what characters you picked, every character could use whatever materia and thus whatever abilities you wanted them to have. All the side quests were fun, but once you got KotR, W-Summon, and Mime boss fights were a joke. (Except Emerald and Ruby weapon).
FF VIII: Liked the story, but the way you could have over-powered characters half-way through the first disc made the game way too easy. I did like that Seifer and Squall's cards were exact mirrors.
FF IX: Monkey boy and Steiner made the game really, REALLY hard for me to play. I just didn't enjoy it that much.
FF X: Tidus's character and Yuna's voice acting were awful, but blitz ball was an interesting pass time.
FF X-2: Final Fantasy Dress-up Dolls. Played less than an hour of it before I took it back to Game Stop and traded it for something else.
FF XI: My 3rd or 4th MMO, depending on what you want to count. Really grindy by WoW standards, and at the time soloing was pretty much impossible. Depending on play time, it would take most of a year to get to level cap; with only a couple exceptions, the CD on most of your abilities was measured in minutes; and you lost exp when you died.
FF XII: Not bad, but nothing terribly memorable about it. I did name my Alliance pally Ashelia and made a warrior I named Basch.
FF XIII: Too linear, but had a decent story. I liked Lightning, Snow, and Sahz, Hope made me want to punch kittens.
FF XIV: From what I've seen, FF XIV tried to be different just for the sake of being different. It's like they catered to small portion of the FFXI player base that's rabidly opposed to WoW and any game like it, and hoped that name recognition alone would sell their game.
Never played Crystal Chronicles, loved FF Tactics, FF Adventure on the Gameboy was one of my favorite GB games, but it was more Zelda than FF. Kingdom Hearts was one of my favorite games of all time, and KH II was even better.