Cheap GPS

My first thought on seeing Monday's XKCD was that would likely be an interesting twist on geocaching or location-based games.

HD-DVD Sudoku

"HD-DVD Sudoku"

The Game of Disorientation

Finally an interesting & fun computer game - tGoD

So found this in a /. article, and thought it was really cool. Petals Around the Rose.

Update: The original link appears to be broken. This link from JoeBuck appears to still be working.