COUNTER STRIKE SOURCE (CSS)

On-Line shoot em up

An on-line game this one. Play as either Counter Terrorists (CT's) or Terrorists (T's).
Essentially it's an on-line shooter. The 2 teams play against each other to win a round within a time limit. Rounds are usually things like: "bomb a target/stop the bombing", "Rescue the hostages/keep the hostages", "Defend the VIP/Kill the VIP", etc, etc.
You can usually find me on one of the bigger servers www.viaclan.com, playing as "El Mariachi|SBG|".

Damn good game. Frustating at time, but got a good on-line community around it.

THE SETTLERS IV

God strategy game

A very old game now, but still play it a lot.
Your in charge of Romans/Vikings or Mayans. Object is usually to build your society to a stage where you can conqueor the world.

It's a bit buggy, but still very enjoyable.

COMPANY OF HEROES

War Strategy at Unit level

I've got a killer PC, so this is one of the few games that actually causes it to speed up the cooling fans. Great graphics and wonderfully playable. Could do with a few more skirmish maps, but still an enjoyable game.