StackOverflow - When clicking a tab in the help bar, the matching icon on top of it start jumping up and down.
/video - http://d.pr/wtEd
/via Kim

StackOverflow - When clicking a tab in the help bar, the matching icon on top of it start jumping up and down.

/video - http://d.pr/wtEd

/via Kim

iOS - When you enable airplane mode on iPhone, a little airplane icon flies from the edge of the screen.
/via marianmraz

iOS - When you enable airplane mode on iPhone, a little airplane icon flies from the edge of the screen.

/via marianmraz

Chrome - Status bar shift down with the cursor when it is hovering a link near the bottom of the page. After a few seconds its hows the entire URL.
/via good1am

Chrome - Status bar shift down with the cursor when it is hovering a link near the bottom of the page. After a few seconds its hows the entire URL.

/via good1am

Sign in button expands and folds out once clicked.
Try it for yourself here
/via Matthew Farag

Sign in button expands and folds out once clicked.

Try it for yourself here

/via Matthew Farag

Apple - Menu drops down and bounces a little bit. Search bar expands intelligently once activated and shows different search results depending on what page you are on. 
/Thanks to Renato for being the first to submit.

Apple - Menu drops down and bounces a little bit. Search bar expands intelligently once activated and shows different search results depending on what page you are on. 

/Thanks to Renato for being the first to submit.

New ScientistSimple optical illusions can make it seem like the progress bars on your file downloads are moving faster than they actually are. 

Svvply - Hovering a shop item shows information intuitively. 
/via @andrevvm

Svvply - Hovering a shop item shows information intuitively. 

/via @andrevvm

(Source: svpply.com)