Google Chrome - When dragging the active tab it is always on top of the others, when dragging an inactive tab it moves behind the active one.
/via Blake Simpson
Sugru - Lets you look at the most recent issue of their newsletter before actually signing up for it.
Google+ - When posting a link to Google Plus, it replaces the URL with the title of the page the URL points to.
/via Wouter van Vliet
Google Maps iOS - Shaking the device allows the user to submit feedback.
Karma - When searching on the infamous “90210” ZIP code, Karma gives the user a quote from its namesake TV show.
/via Patrick H.
Facebook - Offers pirate and upside-down versions of english as language options.
Google Drive - An expanding hover interface allows you to choose the desired amount of rows and columns in a new table.
/via Kjetil Holmefjord
Google Calendar - Typed times in the event description are automatically used as the start time. Also works with a time range (e.g. 12pm to 2pm).
/ via Erik Getzel
Xcode - The editor sidebar shows how “deep” the indentation of the code is with varying values of grey.
/via HonzikD
