I just got turned onto a couple of cool FaceBook games today.
Bumper Stars is a cross between pinball, pool and Pacman. Basically you have a little beaver whom you shoot off to eat fruit and you bounce off all sorts of things. Kind of stupid, but fun and addictive.
Who Has The Biggest Brain
Who Has The Biggest Brain is one of those rare games which makes you think and makes analytical thought into a competitive sport. There are about 7 or 8 varieties of brain tests and teasers from simple math to figuring out which random objects weigh more than the others, finishing puzzles and counting blocks. The first few times you play are the most fun as you are presented with brand new kinds of tests which make you learn new tasks (after that it gets more competitive but stretches your brain less). In any case I am a scholar!