This may take awhile...
10.Xenogears - This game was wonderful. Great story line, diffrent combat system, and a mech battling mini game. What more could you ask for?
9.Secret of Evermore - I got secret of Evermore the same day I got Chrono Trigger. I remember that my dad bought both games for HIM, but I snuck into his room while he was at work and opened both games. I started to play Evermore first, and loved every moment of it.
8.Lunar:SSS - I'm afraid I didn't get to play this game until it was released on the PS1, but almost as soon as I picked it up it felt like I game I should have been playing for years. A wonderful, classic fantasy story with loveable characters.
7:FF4 - One of the first if not the first rpg I ever played. It had simple, intuitive combat, a gripping story, and many hours of gameplay. I'll never forget my cart getting wiped right after I beat the sandlion and weeping openly =(
6:FF8 - 8 was my favorite of the playstation final fantasies.
I loved the story and the characters so much. I know a lot of people complain about it, but personally I never had any trouble with the juntioning or the battle system. In fact I really liked it, which is no doubt due to my love of micro manegment.]
5:Star ocean TTS - If the list was a ranking of how many times I've played a game So2 would likely be number three on this list. I've played it at least 6 times, and I'm sure I'll play it again. This is one of the most underrated games on the ps1, and I highly recommend it.
4:Chrono Cross - What can I say? CT sequal=love. The sheer amount of strategy needed for battles and planning, and the dizzing amount of characters made this a one of a kind gaming experiance. I've only played it twice, but I'm sure it has a lot of gameplay left in it.
3:Earthbound - How can you not love a game that has you digging for hamburgers in trashcans? This game used the idea of a modern RPG and made it work in spades. It had a great art style, and a sweet unforgettable story. One of the best ending evar!
2:FF6 - The game I've played over and over the second most. I love the story, the battle system, the characters, and the timeless the graphics. Everything about this game is perfection.
Intresting side note is I started using this handle after playing FF6 ^_^
1.Chrono Trigger - I'm going to try very hard not to crazy fangirl here... *deep breath* All I can really say is that I spent much of my youth playing Chrono Trigger, so much so that my parents took it away from me fearing I was obsessed. I have to admit I was a bit icon_sweatdrop.gif I'm the only person I know who has gotten all level ** characters without cheating(at least until I came here). I'm not sure how many times I've played it (I've done a lot of new games and a whole lot of new game +'s), but I seem to remember my master save file having something like 63 Bike logs in it's inventory.
Honorable mentions:FF7,Lunar EB,Ogre battle, Illusion of Gaia, Lufia 2, FF tactics, ToS, FFX, FFV, Kartia, Secret of Mana and Kartia.