This is just cool. Google I/O starts tomorrow and Google created an awesome countdown clock, along with the Android logo holding a QR Code sign that will take you to the Google I/O Android App or app site page.
To capture the awesomeness I recorded a screencast of the Google I/O page.
Scanning the QR Code with an iPhone took you to the Google I/O Android app page
Scanning the QR Code with an Android App took you to the app’s page in the Android App market.