-Fallout 1 and 2 : both UK versions bought on ebay. I also have the french versions and I just decided to check them in English
-Arcanum : my favorite game ever. I was actually kind of sad when I finished it for the first time. It's a french version, it was brand new and I payed 5 bucks for it in a french store during sales four years ago I think.
-Daggerfall : I first played it ten years ago at a friend's. I thought that it was great. Found my own copy two years later in a second hand store.
-System Shock 2 : bought it when it was released. Funny how Bioshock got old really fast for me and SS2 still manages to scare me and have me come back to it from time to time.
-Outcast : a nice and rather deep action/adventure game. While it felt nice and poetic at the time it now looks butt ugly. I still like it though.
-Carmageddon 2 : bought it when it was released too. The french version is censored ( zombies instead of human pedestrians ) but a patch was released soon after the release. It got me hooked for months. It was offensive, funny, brutal, and had great physics ( and I just love fucking with physics ).
-Postal 2 : found it last year in a french shop but already had played it. The game itself has a rather mehish gameplay but it manages to really entertain me. Even the bugs are funny in this game, seriously.
-Max Payne 2 : bought it when it was released too. Still did not find an action game which could beat Max Payne 2. Awesome graphics and physics, cool characters, charisma, mood, and even a nice storyline. I just LOVE it.
-Destroy all humans 2 : it was never released in France but the "NTSC" version is actually region free. Bought it on ebay last month and have fun with it like crazy. Told ya's : I just love to fuck with physics.
-Chrono Trigger : it's a japanese version I've bought for next to nothing eleven years ago. Went through the american version afterwards. Probably the only japanese rpg I really like.
-Raze's Hell : bought it last year. Almost impossible to find in France. Really funny shit, a tough game to beat and an awesome cooperative experience.
-Ultimate D&D : bought it today for fifteen bucks. Contains Baldur's Gate 1 and 2 + add ons, Neverwinter nights + both add ons, Icewind Dale 1 + add on, Icewind Dale 2, Temple of elemental evil, Demon Stone and Dragonshard. While I do not really like any of these games besides Baldur's Gate 2 and its add on, I thought it was a reasonable price for 13 games which all in all are not THAT bad.
EDIT : rare/old games only please...