This video explores a bit of utility based AI for tile based position selection by applying re-usable considerations to the decision making mechanism.

It is probably an oversimplification of the term Utility AI, but should be a reasonable introduction...

[youtube=axw9T-Hi8uY]

In this tutorial we discuss how to implement both text and image based compasses for use in any game where you need to provide a sense of direction to the player.

[youtube=FDTOTsAeS7o]

My new favorite application for OSX is called Helium. 

It's basically something that allows you to keep an always-on-top window with whatever video (youtube, local, etc.) you want to have playing while you do other things. 

Pretty awesome!