Google Calendar's in-place-editor
I noticed a nice little twist on the in-place-editor in the new Google Calendar, namely that it adds a small 3D-style border to the hover effect, which makes it look more like an input field. See the image on the right: The first is how the data looks, the second is on mouse-over, and the third is after the field is clicked. Very nice touch.
confirm(), but it does look nicer.