I can only think of two. Final Fantasy Tactics and Castlevania: Symphony of the Night. Both re-bought on PSP. I *nearly* re-bought Borderlands for the PC before Diablo 3 came out, but then I reinstalled Diablo 2 instead.
Actually, looking up at my game shelf, I, for some reason, have a PS2 copy of Deus Ex. This, I do not understand.