Favourite Playstation Games?

In no real order:

Tomb Raider
Tekken 3
Silent Hill
Resident Evil
Driver
Vigilante 8
Twisted Metal 2
Doom
Final Doom
DukeNukem 3D
Duke Nukem Time To Kill
Destruction Derby 2
Resident Evil 2

Final Fantasy VIII
Final Fantasy Chronicles
Gran Turismo 2
Syphon Filter
Tony Hawk 1 & 2
Castlevania: Symphony of the night
Mass Destruction

You can also try pawn shops, garage sales, craigslist & local flea markets for used older games, you may get lucky & find some unopened copies :)