Simple - While signing up for an account, a Visa debit card is filled with your name as you type it in the form.
/via Tyson Gach
Sublime Text 2 - On the download page, all available versions are shown, with the OS you’re running preceded by a black dot instead of a white one.
Amazon - After completing your order, the page title changes to: “Amazon.com Thanks You”
/via Steven Scarborough
iCal - Shows birthdays from Address Book with the person’s name and age.
/via Clemens Mayer
YouTube - When viewing a music video, it tells you where and when that artist is playing next in your area.