okami is class for the visual style alone, i admittedly got bored with it before completing it though
final fantasy VII is my favourite game of all time, god, i love it. clearly better than any FF which came after, although i do have major personal attachment to VIII (not in the way you might think). plus VIII is basically VII for teenagers, so i loved it when i was younger. IX i like but it's way too traditional fantasy for my liking. X i just couldn't get into, horrible voice acting and boring story, it was good for an RPG but i have high standards. XI i didnt play, XII i didn't like. i love VII because it's so dark and reflective with all sorts of awesome subtext and a fantastic gritty world and an amazing soundtrack and you get the picture.
some of the early games are great in some ways, i used to really like VI, problem with those was the sheer amount of random battles though. i'm way too impatient.
metal gear solid (first one) is probably my second favourite game of all time. cook-ta man, play all of them if you have the means, seriously. they're all different and they're all fucking awesome. 1 has the best story/atmosphere, 2 has some of the best gameplay i've ever seen, 3... i'm not a massive fan of 3, too fiddly, but it's still essential playing because it's so different and so brilliantly made. i can't wait to play 4 but it won't be happening any time soon, don't have the money.