I found this simple, but surprisingly strategic flash game. It's like checkers, but you can pick up power ups that change or alter the playing field and stuff like that.
I'm simply playing as a guest, but if you register (and pay), you can get membership benefits. I am just somewhat dumbfounded that people will pay to play a flash game... but I digress.
Anyway, it's kind of fun and a good time waster.
http://www.quadradius.com/quadradius/index.html