While I'm not really a gaming addict per se,  there are a number of computer games that I really enjoy playing.  Most of the games I play fall into one of three general categories:

Real-Time Strategy Games

• Total Annihilation
  • Total Annihilation Official Site
  • Planet Annihilation
  • Annihilated.com
  • TAMEC (Maps!)
  • TA Universe
  • TA Top 100
• StarCraft
  • Starcraft Official Site
  • Planet StarCraft
  • starcraft.org
  • Starcraft Hacks
• Command & Conquer
  • Starcraft Official Site
  • The Westwood Underground
  • Planet Command & Conquer
• Homeworld
  • Homeworld Official Site
  • Relic News
  • GUIDESTONE.COM
  • The Gaming Union
  • Star Trek Mods (including SoA)
  • Star Wars Fleet Academy Mod
  • taiidan.co.uk/
  • Homeworld Shipyards
  • Homeworld Map Archive
  • Homeworld Universe
  • Homeworld X
  • Homeworld Top 100

First-Person Shooters

• Doom
  • Doom Legacy Official Site
  • Doom Legacy
• Quake 1
  • PlanetQuake
  • GeNClasses
  • Welcome to the FvF Multiverse
  • QuakeRally Project
  • AirQuake TC homepage
  • Airquake Levels - News
  • Team Fortress Home
  • Team Fortress Strategy Guide
  • TFNewbies
  • Fragtown Homepage (Urban Levels!)
  • TEXTMODE QUAKE!!!
  • Fantasy Quake: Rise of the Phoenix
• Quake 3 Arena
  • PlanetQuake
• Starsiege: Tribes
  • Tribes Universe
  • Planet Tribes
  • Sierra Studios: TribesPlayers
  • Tribes Professional Mod
  • Stormbots
• Unreal Tournament
  • Unreal Tournament
  • Unreal Tournament Center
  • Planet Unreal
  • UnrealNation's File Library

Arcade Emulation

• MAME
  • M.A.M.E Official Home Page
  • M.A.M.E ROM Site
• Retrocade
  • Arcade@Home(tm) - Retrocade Emulator
  • Hal's Retrocade Page
• DVE (Vectrex Emulator)
  • DVE U.S. Mirror

Other Games

• Need for Speed III (Hot Pursuit)
  • Markus' homemade NFS-Site (Awesome NFS:3 Car List)
  • NFSCars - Over 3000 cars for Need For Speed 3, 4, 5 and 6!
  • ND4SPDWorld - Feel The Speed... The Need For Speed!! (Cars and Tracks)
  • Need for Speed G-B (Tracks, especially NFS:2 tracks converted to NSF:3)
  • NFS Wizard 5.0.79 (NFS:3 Car Performance Manipulation Utility)
  • NFS Manager (NFS:3 Car and Track Management Utility