1. Star Wars: Knights Of The Old Republic (and the sequel).
I've wasted so many hours on the two KotOR games, but all was well spent, kept me happy and introduced me to the RPG genre. Plus, I got to be a Jedi!
2. Star Wars: Galactic Battlegrounds Saga
My fondest childhood memories were playing this fantastic RTS online on a dial-up connection. Many hours in, the host would receive a phonecall and BAM! Connection lost. So much fun and again, Star Wars nostalgia at it's best post-1970's.
3. Call Of Duty 2
Forget CoD4, forget Modern Warfare 2, Call of Duty 2 is where Infinity Ward created their greatest asset. Easily my favourite FPS since the days of Delta Force: Black Hawk Down.
4. Championship Manager 1999
As a massive sports fan, especially Football, it's hard to imagine life without the management sim series. However, with Football Manager 2010 on my christmas list, this could soon be replaced!
5. Star Wars: Battlefront
Whilst it was a fun game and worthy of adorning the Star Wars branding, Battlefront was my first ever experience of Xbox Live and boy, was it an experience to cherish!