Kept the PS1 for Legend of Dragoon, Digimon 1 &2, Final Fantasy Tactics (I heard they remade this on PSP, is it good?), Crash Team Racing (suck it mario kart), Worms Armageddon, and Tony Hawk 2.
Still have the PS2 for Final Fantasy X, 007: Nightfire, and Kingdom Hearts but I rarely fire it up...