In case anyone has missed it, one of the big areas in tremendous growth is online games. Not just games like WoW, but also simple, small and free games. Here's a few links to some I enjoy:
Proximity, a Go! clone.
Dino Run, run like a dinosaur escaping extintion ;-)
Chronotron, probably one of the most innovative puzzle games of today.
The Last Stand 2, a zombie shooter. The original is very good as well.
Nanotube, simple and demanding on your reflexes
Boxhead - The Zombie Wars, another installment of a different kind of zombie shooter. This version has the options of placing fixed guns. The previous versions of Boxhead are good as well.