Some websites I have found interesting (in no particular order):
Font Squirrel — Very cool website listing quality fonts that can be downloaded and used on a web page using @font-face.
Arduino — As I understand it, a way to build your own electronics. Now all I need is an idea!
Internet Explorer 8 - Browser for the Better — Upgrade your browser and Microsoft will feed hungry people!
World’s First Grocery API — More businesses/stores need to do stuff like this.
iPhone Sudoku Grab: How does it all work? — Very clear explanation of the computer vision techniques used to read in a Sudoku from an image.
UUID as your ActiveRecord primary key and default_value_for Rails plugin — How to get ActiveRecord to use UUIDs are primary keys. If you are doing anything distributed, UUIDs are the way to go!