Some excellent titles to choose from that make my shortlist (in no particular order):
A good year...
virtual pc 2004.
its allways fun trying to find which keys work and which ones won't. feels a little like the original doom....
Two titles spring to mind: Half-Life 2 and Football Manager 2005. Half-Life 2 managed to live up to expectation for the most part and Football Manager 2005 was the return to excellence from Sports Interactive.
World of Warcraft
PC: Half Life 2
Xbox: Ninja Giaden
rules, so under rated in GameSpot.com!
I would go for Joint Operations: Typhoon Rising (aka JOPS). Great multiplayer experience.
Kudos to Far Cry and...PGR2 also.
Half-Life 2 already won Game of the Year.