Other fun games sites:
Runescape - Awesome 3D graphics online RPG
Kung Fu Chess - Best chess game using modern technology - all pieces move simultaneously - must play for all chess fans
Outwar - RPG game building monsters, gangsters and popstars
Games.com - Love the Board Games - only site with standard board games like Clue, Monopoly etc.
MapleStory - Online RPG with awesome graphics