Quake 4... before that was Oblivion... Before that... umm.... JA?

Kingdom Hearts II I got it when it first came out.

PC:
I got The Elder Scrolls IV: Oblivion from a friend when it came out.
Shortly before that, I bought Half Life 2: Game of the Year Edition.
Two days before that, I got Unreal Tournament 2004 at Fred Meyers for peanuts. Apparently, if you bought UT2k3, you can send in the proofs for a rebate. Must be some kind of apology or something.
I got Quake III: Arena, Diablo 2: Lord of Destruction, MDK, Empire Earth, Sim Theme Park, The Sims: House Party and Dark Age of Camelot in a space of two days. At thrift stores. 4t3hwyn.
On my birthday, about three months ago, my aunt got me Star Wars: Empire At War, which was an excellent gift yet I suck horribly at RTSes.
A few weeks before that, I bought Battlefield 1942: The Complete Collection which has BF1942, Road to Rome, Secret Weapons, and Vietnam. Cooli-oolio.

NGC:
A few days ago I rented Sonic Adventure DX and Star Wars: Rogue Squadron III: Rebel Strike. I used to have a copy of RS, but I lost it in hock, along with Star Wars: Rogue Squadron II: Rogue Leader, Enter the Matrix, and Lord of the Rings: The Two Towers.
A week ago, I got Lord of the Rings: Return of the King which has gotta be one of the best movie games I've ever played outside of SW.
For my birthday, I got Tony Hawk's Underground, and then got Tony Hawk's American Wasteland shortly thereafter, which was actually kinda dissapointing because I was just starting to get somewhere with my THUG character.
When I got my new NGC at christmas, I also got Primal Fury: Bloody Roar and Enter the Matrix. Hell, it might have even been my copy of EtM.

-EtM kinda suck, really.

Battlefield 2: Special Forces

Guild Wars. Before that was World of Warcraft.