Run Droid Apps on your Mac
If you have a craving for Android apps on your Mac, you may want to try Bluestack's Android App Player
It's still in Alpha.
UPDATE 28 Dec, 2012 The Mac version of Bluestack's App Player is now in Beta. ALL Play Store apps are now supported. 17 apps come pre-installed, and you can install up to 26 apps in the player http://bluestacks.com/index.html