Kickass typing game at http://TyperA.solutions.fi/ page. Some of the custom groups highscores:
- HDA
- #SFP IRC channel
- #Stonerrock IRC channel
- CyberKrew game posse

Some online games i've come across, which are or should be free:
NetHack - The Allmighty NetHack!!
Stair Dismount - free addictive game
Classic Arcade Games from the 08's
PopCap Puzzles
Muumien kalastuspeli / Moomin fishing game
Candystand.com games - Lots of online games
Racing game - build your own track and race
Fly The Copter! - As it says
Lithium Drop - Tetris etc. hybrid
3D Pong - Amazing game to kill some time with
SmilieGames.Com - Lots of online games
FunPlanet - Finnish MTV3's game page
24 GameBox - Lots of small online games
MBNet's Pelihalli - in Finnish only