Oh gods...so much that i can put up here :|, so here goes:
Final Fantasy Series, Dragon Warrior Series, Zelda Series, Paper Mario series, Super Mario RPG, Tales Series, Star Ocean Series, Crystalis, Seiken Dentestu Series, Mother Series, Golden Sun 1 & 2, Dokapon, Castlevania GBA and NDS Series, Breath of Fire I,II,III (sorry dragon quarter, you just sucked :/), Parasite Eve series, Kingdom Hearts Series, Disagea series, Diablo 1 & 2, Warcraft I,II,III, Starcraft, Age of Empires I,II,III, Gran Turismo Series, Metal Gear Series (that's metal gear And metal gear solid), Dragon Warrior Monster I & 2, FFT series, Soul Blazer, Illusion of Gaia, Terranigma, Summon Night:Swordcraft Story I & 2, Boktai 1 & 2, Azure Dreams, Grandia Series, SaGa Frontier, Radiata Stories, Baten Kaitos, Eternal Darkness, Pro Evolution Soccer series, LBP, Fire Emblem Series, Shining Force series, Shining Soul I & II, Baldur's Gate Series, Mario & Luigi Superstar Saga, Banjo&Kazooie Saga, Conker's Bad Fur Day, Phantasy Star Series, Story of Thor, Sonic I, II, III, Sonic 3D and Sonic Adventures I & II (that's about it from sonic), Planescape: Torment, Icewind Dale, KOTOR I & II, Chrono Trigger, Chrono Cross, Legend of Dragoon, Legend of Legaia, Granstream Saga, E.V.O, Secret of Evermore, Donkey Kong Country I, II, III, SSB series, Metroid series, Lufia series, Monkey Island Series, Resistance I & II....
As you can see this list is huge, and this are just my favourite games, this is not nearly 1/10 of all the games i've played and that i have =). (The My games list include all those i've played and finished, mostly i still have, some gathering piles of dust, mainly because Kronos won't accept me adding 96 hours to a day so we could game longer XD, while others where replaced by emulation)
And finally...my favourite game of all time...the pearl of my existance....LUFIA II: RISE OF THE SINISTRALS *bows down in deep reverance of this holy game* :D