2008 has been better than 2003... lets just be thankful for that.
2003 was one of the worst years I've ever seen for PC gaming. The only good releases for the PC that year were Splinter Cell (didn't like it) Rainbow Six 3: RS (decent at best) and Tron 2.0. Max Payne 2 was arguably GOTY.
Some of my all time favourites were released in 2003.
Prince of Persia Sands of Time
Wolfenstein Enemy Territory
Call of Duty
Max Payne 2, as you said