Best PC games of 2006 and earlier?

Hi, Im looking for suggestions of the best games previous to 2006 for pc. Any ideas are welcome and would be greatly appreciated!

Half life 2

F.E.A.R

Gothic 2

Oblivion ( i personaly hate the game but most ppl like it)

S.T.A.L.K.E.R (its 2007)

Far cry.

Baldur's Gate 2.

• Max Payne 1&2
• Painkiller
• Chronicles of Riddick: EFBB

Vampire the masquerade: Bloodlines

Dawn of War 1 (and expansions)

Max payne games

Neverwinter nights

Neverwinter nights 2 (I think)

Dungeon keeper (and 2)

Battlefield 2

Warcraft 3

F.E.A.R.

Half-Life 2

Jazz Jackrabbit 2

Age of Empires 2

Medal of Honor: Allied Assault

Deus Ex
System Shock 2
Vampire: The Masquerade - Bloodlines
Gothic II
Fallout 1 & 2
Arcanum
Arx Fatalis
Baldur's Gate II
No One Lives Forever 1 & 2
Return to Castle Wolfenstein
Thief: The Dark Project
Clive Barker's Undying
Riddick: Escape from Butcher Bay
SW Republic Commando
JK II: Jedi Outcast
Soldier of Fortune 1 & 2
Aliens vs Predator 2
Far Cry
Vietcong
MoH: Pacific Assault
CoD: United Offensive
Brothers in Arms series
Rainbow Six 3
SWAT 4
F.E.A.R.
TRON 2.0
Mafia
Max Payne 1 & 2
Hitman 2
Freedom Fighters
Splinter Cell: Chaos Theory
Alpha Centauri
Civilization series
Hearts of Iron II
Silent Storm
Rome: Total War
Homeworld
Total Annihilation
Age of Empires II
Warzone 2100
Ground Control
Commandos 2
IL-2 Sturmovik
Grim Fandango

Well.. damn, just to many to name, so i'll just say i played so many current gen RPG's and no RPG comes close to the immersion and atmosphere of Gothic 2.

Graphics are dated, but still holds up, excellent game. You should try it.

Well, if I had to choose one, it's Gothic II.
But there's lots of good games from earlier than 2006...

Need for Speed (series), Splinter Cell, Worms World Party, Age of Empires II, FlatOut.
Those came to my mind from the straight.

If I can suggest one great game for you to try out (from 2007, though); Penumbra: Overture , and it's sequel(s).

World of Warcraft