I love it when I see programmers and designers going above and beyond and paying attention to the small details. One feature that recently caught my eye were the browser icons (or favicon) used by Google Calendar (and Gmail).
Note how the blue Google Calendar icon actually has today’s date instead of some random number. Left of it is the Gmail icon showing the unread mail count. In order to get this functionality in Gmail you have enable the “Unread message icon by Manu C.”
Google folks, keep up the good work! 🙂