1, Super Smash Bros. Melee: I'd say Multiplayer is the best ^_~. God you got 4 people on one screen battling it out, and even teams you can adjust anyway you like, and you can even have your own selection of items to come out and how often they come out, even you can unlock new characters while playing multiplayer by random, god this is like unlimited. Super Smash Bros. Melee is mother friggin 10000 times better than Digimon Rumble Arena 2 (a.k.a Battle Chronicles).
2, Final Fantasy X: Mainly because not using that same old name: Ultima Weapon. Geez how many times does it have to die in the FF series. Just kidding. What Andy said.
3, Kingdom hearts: Woo I love this. But I like FFX better. Even though my CD is totally slashed up, I remember when i played it I took 50 years on atlantica mainly because i didnt like swimming. >_> XD
And KH2? Oh yeah Dual Keyblade baby! XD