Before WoW, I was a huge FpS fan.
I have the half-life collection, but don't actually play it much.
There was a point where my friends and I would live and die by Battlefield. Again, I have the full series (Battlefield 1942, Vietnam, 2, 2142) The graphics have improved dramaticly through the series. Battlefied 2 and 2142 are both graphicly demanding. Rag-doll effects are much better too.
The Medal of Honor series is also very good.
I have a few "scarry" games that I'll only play at night. (so much better that way) Doom 3, F.E.A.R., The Suffering
- Doom is awesome. My bro walked down the hall and said "hey"...I nearly crapped myself.

- F.E.A.R. is pretty creepy. There is this little girl that pops out randomly and vanishes. Mobs to the same. Really errie...
- Haven't played The Suffering much, but heard it's really good too.
Being a bit of a gear head (putting it lightly) I am also a fan of the Need for Speed series...all of those too. Some of the older ones are cheezy, but running and smashing into cops (bobbies?) is always fun.