Topic: Plants versus Zombies
Man this is silly fun. It's a basic tower defense game, with lots of mini-games inside, where you take down the undead. The setup at the beginning is a bit slow though, and it's not as replayable or brain dead as say, Peggle, but it is quite fun.
I particularly like the Beghouled mini-game.
It's US$9.99 on Steam by the way.