Google Images – When dragging a photo on the page or into the browser, the search input changes to support drag’and’drop.
Chrome (Dev Channel): Displays “Hold ⌘Q to Quit” instead of immediately quitting to make sure you didn’t intent to press ⌘W.
Webkit - When entering text into a password field in WebKit based browsers (f.e. Safari & Chrome), a small icon will appear if caps lock is activated
/via Tobias Michealson
GelaSkins - Newsletter uses out of the ordinary copywriting to offer to users the browser version.
MobileMe - When resizing the MobileMe login window, it’s centered on the login box, instead of the classic top left corner.
Chrome - When using the search box on the preferences page it highlights the results with a yellow notification.