QR Codes

So I find QR codes to be pretty cool and a great addition to a business card, letterhead, etc.  There are many sites online that will generate them, but (currently) I'm partial to the Webmaster Handy Tools QR Code Generator.  You can choose from a lot of different types such as a vCard (which imports nicely as a contact), bookmark, tweet, etc.  I generated the one on this site using this tool.  I know there are lots out there, but this is the one I settled on that seemed to have the most options.